My bf iz bein unfair threatnin 2 leave me nd being really nasti wat shuld I do?

jus spoke 2 my bf on da phone nd told him evrythin abut how he anoyz mi sum tymes, n dat if he dusn stop bein so borin i wil brake up wid him n hw he takes mi 4 granted nd he waz like well yu anoy me nd den just started bein relly nasty 2 me. he waz like bringin stuf up 4rm days ago wen i kissd his 2 best mates nd hw i did fings wit my ex tha day after we got 2geva whitch is jus nastay nd den he waz lyk may b i shud brake up wit yu an i jus think dat is unfair coz i was d 1 who sed i wanted to brake up wit him first, so den i sed i wud beat up his sis if he did dat nd now he sed he myt brake it off nd dat he needs to think and i think dats unfair coz he haz nothin 2 think abt, dis waz me thinking abt him nd hw borin he iz. wat shud i do?