text: if your ex starts going out with your former best friend ,is it weird if you then start to develop feeling for your former best friends ex and is it a bad idea to act on these feelings even if you think there's some serious signals being broadcast? this is made all the more confusing by the fact that the two guys involved are best friends. i don't see what the problem is.......... go for it. your best friend cna't get mad at you after all they are with your ex, what's the difference.