Did i do the right thing?

well me nd my boyfriend been goin out 4 about 8-9 months nd his a very respectful guy he has neva cheated belive me i would know bc i check erthang nd so does he bt one of ma girl-friends which she kinda close 2 me was sending him texts saying "oh u so kute jessy[me] is so lucky 2 have u seem like the kinda guy dat has a big package"..they were chilling before dat nd she tryed kissing him so he fwd me da texts nd i couldnt belive it bc she was close 2 me so i got sooo pissed off at her so we had an agrument about it nd i got heated nd punched her so we ended up fighting..now idk wat 2 ppl told me i should of have ignore her nd other ppl say i did the right thing ..so i want ur opinion nd tell wat have u have done if u were on my position.=]