Sounds like there is no proof that she is cheating, but if another guy is calling her Baby, well, that would ____ me off- But you should ask her about it-Or, as the others stated, if you really don't trust her, then don't bother- just end it. A relationship without trust is like a car without wheels; its not going to go anywhere.

 

You could get revenge like this... http://youtube.com/watch?v=R6Z8PGixG7U

 

^ Wow, she managed to f**k up two cars, in front of police, and witnesses, and a cameraphone!