No REAL friend does that shit...if you would even consider dating one of your boys ex girls then you are scum...i would NEVER even THINK of it, dating my boys ex..and if i did they have EVERY RIGHT to want to beat my ass...I guess being Italian and raised the way i was and having the notion of RESPECT instilled upon me makes me the way i am today.
And it has NOTHING to do with insecurity..i could give 2 shits if my ex banged someone i didnt know..good for her...but banging my friend..um no..that is unacceptable.