never break up a relationship because karma will have it happen to you, wait for them to break up and then make your move on the guy....it will happen eventually...
He is simply a guy! guys do that unfortunately!!
Respect that he is already in a relationship. If he is worth anything, he would break things off with the other person before getting involved with someone else.
As phrased, the question is somewhat ambiguous. What kind of guy goes out with another guy? A gay guy. What kind of woman who already has a boyfriend (presumably you) goes out with another guy? Probably a woman who does not have the same degree of committment to your relationship that you do.
thats easy first check his relationship status on facebook!
It depends on the person.
You distract you're self by thinking about the guy you're dating. If you think you like that guy, you should ask him out and dump the other guy. :)
Wait for them to break up or move on. Don't interfere with their relationship though.
Wait for it to end...
maybe he is really good friends with her and cares for her.
Yes.Everything's possible in love.
He is not ready for a monogomous relationship (dating 1 person only)
well there are many situations. A) she is already in a relationship B) he is playing hard-to-get C) he already knows that the girl is not into him