It is not adultery if you have already separated If you engage in a sexual relationship with someone while you are still legally married, it is technically adultery even if you and your former partner do not live together anymore and are no longer emotionally or physically in a relationship.

How long is too long to be separated?

The time should ideally be between three and six months so a sense of urgency and sincerity is retained, especially where children are involved. The longer the separation continues, as people settle into their new routine, the harder it is to get back to the old life.