The answer in the eyes of the law is yes. If you are separated from your husband or wife and you sleep with another person of the opposite sex this is adultery under English family law because you are still legally married. It is still adultery.

Should you date your spouse while separated?

Always discuss the implications of dating before beginning the relationship. Make sure your spouse knows that going on dates during your separation does not necessarily mean youll reconcile. Never go on a date with your spouse during separation out of guilt. Trying to let him down gently by dating will backfire.

Can I file separate taxes from my husband?

By using the Married Filing Separately filing status, you will keep your own tax liability separate from your spouses tax liability. When you file a joint return, you will each be responsible for your combined tax bill (if either of you owes taxes).