It is illegal From a legal perspective, having a relationship with a married man or woman is illegal. While there may be no legal case against you, he will stand to lose his marriage, his property, and may even have to pay financial assistance depending on how his wife chooses to proceed with the case.

Can you get in trouble for dating a married woman?

No, if you live in the US or the western world, it is illegal to marry two people. Its called polygamy. So if you marry someone who is already married then your marriage would not be legal. If you are dating a married man or woman you have no legal options available to you.