Our Relationship Is FallIing Apart What Do I Do?

Ok We Got 2gether On Jul14th2007.& We Recently Broke Up On SunJan20th2008.Da Last Few Months We've Been Arguing Bout Stupid Thingz.&Our Relationship Has NO TRUST Whatsoever.Like For Example A Few Weeks Ago We Were Arguing Ova A Guy...He Was An Old Friend Dat Tried"Hooking"Bakk Up W/me.&At Da Basketball Game He Walked By Grabbing My Hair.Ryan Seen Him&Got Mad, Went Up To Him&Confronted Him.[[Basically YelledAtHim2STAY AWAYFrom Me.]] Den A Few Weeks After Dat We Ended Up Running In 2 Him At His"Work"&Later On Dat Nite He Threw His #At Me, & Tried 2Talk 2Mah Friend Michelle...[[Ty'z G/F.]] So Now Ty&Ry Were Startin 2 Get MAD. & Later On Dat Nite Dey Called Him Out Side&Dey Yelled At Him...&Den Not2 Long Later Dey Both Jumped Him. I Ended Up Staying W/Him.&Ever Since Alls We've Been Arguing About Is Dat Guy. Soo...I Broke Up W/Him&Now I've Moved On&Now All Ry Wants 2Do Is Beat Up My New Boyfriend & Last Nite He Ran After Him & Punched Him In The Ribs. IDK wat 2do.Hes Been Doing More cont.