Please advise - would like a male's perspective as well?

If you feel guilty and used like a spare you should. You found out this man was MARRIED and you decided to have relationship with him outside his marriage. You could have left before you started catching feelings but you wanted a relationship with a married man and you wonder why it ended like it did and why you're so hurt??? Everything you had was built out of sin,,how can anything good come from that?? You knew better