answers: 1.) your friend shouldn't date your ex. It's kind of a rule between friends, maybe not written or anything, but you DON'T do this. Even when your friend had been broken up with him for awhile, or she says it's okay, you shouldn't do this, ever. 2.) if your friend hasn't seen her boyfriend for like...a month, or a couple weeks or more, I can see her asking nicely to see them. But if they see eachother all the time and she's breaking off everything with her friends to date her bf, that's wrong. Friends should be first.