damn that sucks man, especially since its ur friend and hes a musician too. that would be a rough one for my self esteem. especially since you mentioned that hes more "successful" than you. thatd bug the shit out of me.
also, she didnt really cheat. you two were apart. that whole calling everyday and checking in shit sounded needy and desperate. im just being blunt here man. you two were apart. i know it hurts but im sure that made her feel much less attracted to you. in fact, she must have lost attraction for you if she wanted to take a break or whatever it is you guys were on.
my philosophy is that happy women dont cheat. if they are happy and getting their needs met, they have no reason to go elsewhere. unless of course they are very insecure and thrive off attention. now every girl loves attention so dont just write her off as insecure immediately. she may have felt a lack of appreciation from you or felt liek you were taking her for granted and not treating her special like you were in the beginning. this is what may have caused her to seek that feeling of appreciation elsewhere. lots of different factors at work here and i cant pinpoint what it was without talking to you personally. but yes, i recommend cutting off all contact and removing facebook too. you are going to torture urself byu checking up on her and keeping tabs on her life. let go and move on. and no, dont let her know anything. itll only make you look weaker and insecure because youre affected by it. just deal with it on your own and work thru the emotions and move on. at least youll keep your pride in tact that way.
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