I made a bad mistake and regretin it...dnt no wat to do.?

well over a 2months ago i had ....with this guy and im not a hoe...and i dont no wat 2 do i stayed away 4rm him and cried so many tears...abd im finnaly over him...but then last night someone called me on private and it went to voice mail.....it was a gurl and it was like stay away from my man and dont talk 2 him on miispace or nuin...and im like wtf???? i ve been stayin away 4rm him...for like over a month now.....he calls me i dont answer his call???so wtf???i have nuin 2 do wit him and please tell me wat i shuld do wit this gurl and like this whole situation......