The saddest truth is that most men don't truly appreciate what they have now and don't see what is wrong with chatting up other women. I've experienced this and i'm married. Unfortunately there is very little encouragement from social circles to uplift the marriage union as sacred and undefiled. All you can do is take great care of yourself, keep your boundaries loud with them and respect yourself in their presence if you are alone with a married guy, don't chat at length or share.