Every relevent rap beef dating back to Biggie and 2pac has involved one of the parties having sex with their opponents' significant other. I'm sure it would have happened with KRS and Marley Marl, way back in the 80's, had either of them had girlfriends. If you recall, 2pac fucked Biggie's baby momma Faith Evans, inspiring Pac to write the infamous lyric, "That's why I fucked yo bitch you fat mothafucker". In the second greatest beef in rap history, Jay-Z vs. Nas, Jay-Z banged Nas' ex-wife Carmen, or something, who also slept with Allen Iverson. Most recently there were those videos of 50 Cent taking Rick Ross' baby momma on a shopping spree and I think some sort of sex tape involving the two, which I never watched for obvious reasons.
This brings me to my main point about the 50 Cent vs. Ja Rule beef. That was easily more of a beef than Fiddy and Rawse, and was at a period in time when Fiddy was much more popular and hence probably fucked a lot more women. This begs the question, did 50 Cent fuck Ashanti? The time of the beef was roughly the same period of time Ja Rule was putting out those duets with Ashanti, which 50 even used as evidence that Ja Rule had become sort of a fag. Ignoring the issue of whether or not Ja Rule and Ashanti were in a real life relationship, is it out of the question that Fiddy hit that? Like Game once said "Anything's possible, if 50 fucked Vivica". Or something like that.