Still married but living with someone else? Discover how this could affect your divorce

Still married but living with someone else? What this could mean for your divorce

It is entirely possible and common for couples to remain legally married while living separately from your spouse. Separation simply means that a relationship has ended in practice, even if the legal marriage is still in place.

For many people, separation can happen long before divorce proceedings are started or completed and many couples may live separately for months or even years before formally ending their marriage. Some choose to delay divorce while they make financial arrangements, decide what to do with the family home or focus on co-parenting. During this time, individuals often begin new relationships as they move on with their lives.

Separation versus divorce explained

Separation and divorce are different stages of the same journey.

Separation simply means the relationship has ended and you are no longer living together as a couple. However, being separated does not automatically end a marriage. Divorce is the legal process that formally ends your marriage. Until a Final Order has been granted, you remain legally married, even if you're living independently or with a new partner.

How no-fault divorce changes the picture and why blame is no longer a factor

The introduction of no-fault divorce in England and Wales in April 2022 has simplified the legal process and reduced the emphasis on personal conduct so neither person must prove wrongdoing to end a marriage.

Before no-fault divorce was introduced, adultery or unreasonable behaviour was one of the facts that could be relied upon when applying for divorce.

Now, under the current system, couples no longer need to prove fault to obtain a divorce and either spouse, or both together, can apply by stating that the marriage has irretrievably broken down. This means the reasons why a relationship ended are no longer examined by the court as part of the divorce process and accepts that the marriage has ended without considering who was responsible.

Does a new relationship affect divorce proceedings

There is also no legal requirement to wait for a divorce to be finalised before starting a new relationship or living with someone else. In most cases, starting a new relationship before your divorce is finalised will not usually directly affect whether your divorce can proceed. As a result, living with someone else before divorce is finalised is no longer framed around blame and the court is not interested in investigating why the marriage ended or concerned with who you are living with when granting the divorce itself.

However, because your legal and financial ties to your spouse remain in place until the divorce is complete and financial matters are resolved, there are situations where a new relationship can have an indirect impact.

Instead, the court’s focus is on ensuring the legal process is followed correctly and on resolving practical matters fairly for the future, such as finances or arrangements for children. If you want to understand more about the process and timelines, Slater and Gordon’s guide may help.

This helps to keep the process more straightforward and make divorce less confrontational.

Financial and practical considerations

Although a new relationship will not usually affect the divorce itself and no-fault divorce removes blame from the process, it may become relevant as finances remain one of the key parts of the divorce proceedings and elements to resolve. Living with a new partner does not automatically reduce or increase what someone receives in a financial settlement. However, financial settlements consider each person's circumstances, including their income, housing needs, responsibilities and future financial position, so if a new partner contributes towards living costs or housing expenses, this may form part of the wider financial picture in some cases. Equally, if either person experiences significant changes to their financial circumstances during separation, these may need to be considered when reaching an agreement. Every family's situation is different, so financial outcomes depend on the individual circumstances rather than the existence of a new relationship alone. It’s important to remember that financial settlements are based on fairness and individual circumstances, not on relationship status. If you are still married but living with a new partner, you may want to think about:

• Shared finances: whether you and your new partner have combined any income or expenses,
• Legal obligations: your continued financial ties to your spouse,
• Future planning: how your new living situation fits into long-term arrangements.

For example, if you are sharing bills with a new partner, this could be considered when looking at your financial circumstances. Just as, if your new partner contributes towards housing, it could affect how financial arrangements are viewed overall. In some cases, it may be sensible to keep finances separate until your divorce and financial settlement are finalised. This can help avoid confusion or complications later.

Thinking about housing and living arrangements

After separation, many people face decisions about their future housing and how housing costs will be managed. Where you live and who you live with can influence practical decisions. Some people remain in the family home while others move into rented accommodation. Living with someone else before divorce in the UK is often driven by real-life needs, such as affordability or emotional support. These practical arrangements do not in themselves determine the outcome of divorce proceedings, but they may form part of wider discussions about finances and future housing needs.

It’s worth considering:

• Whether your housing situation is temporary or long-term'
• How it might be viewed in relation to financial arrangements
• Whether it affects any agreements with your former partner.

If you're unsure about your legal position before making significant financial or housing decisions, it may be sensible to seek professional guidance.

Children and shared responsibilities

Where children are involved, living arrangements can become more complex. The courts prioritise the wellbeing of children above all else. Parents are encouraged to work together to agree arrangements that support their children's day-to-day lives, regardless of whether either parent has entered a new relationship. Introducing a new partner can sometimes also require practical adjustments, but it does not change each parent's ongoing responsibilities towards their children. A new relationship will not automatically affect arrangements, but it may be relevant in terms of:

• Stability and consistency for the child
• Living environments and routines
• Communication between parents

Understanding emotional and personal impact

Beyond the legal process, beginning a new relationship while still legally married can feel emotionally complicated. Separation is a significant life change and moving forward at your own pace is important. People often worry about whether they're moving on too quickly or whether their new circumstances will create legal problems. Some people find that starting a new relationship can provide stability and support, while others may find it adds emotional complexity. There is no right or wrong timeline. What matters is making decisions that feel right for your situation. It can also be helpful to keep communication clear and respectful, particularly if you are still resolving practical matters with your former partner. In most cases, the legal process is more straightforward than many people expect. The no-fault divorce system is designed to reduce conflict and allow separating couples to focus on making practical arrangements for the future. Everyone's experience of separation is different, and it's important to make decisions at a pace that feels right for your own circumstances.

Where to find reliable information

If you are still married but living with someone else, understanding your legal position can help you feel more confident to make informed decisions during separation and divorce. Reliable, up-to-date information through official guidance, legal resources and trusted legal advisors can make a significant difference when navigating the situation by helping you understand both the process and what to expect.

If you're wondering how long the divorce process typically takes, you may also find our guide on how long does it take to get a divorce in the UK helpful. Official guidance on divorce in England and Wales is also available through GOV.UK.

Every situation is different, particularly when it comes to finances and family arrangements, so it’s important to approach your circumstances in a way that reflects your individual needs.

Our family law experts have dealt with divorce cases of all kinds and are perfectly placed to answer your questions, so for guidance speak to our family law team

All the above information was correct at the time of publication.