Is he cheating me?

V have been in relationship 4 around 2 years now…we have drastically different natures but there is something that ignites the spark with in us and we have been having this relationship with all the ups and downs..we have had a lots of fights in these 2 years.both of us are very short tempered.talking about the starting I dint want the relation as I have been cheated by ma x (he was two-timing) for whom I was crazy like anything.we had cross all the limits because I trusted him more than I trust anyone else. But when I meet dis guy after his continous persistence I agreed, mean while he did lots of musshy things for me,he made me meet his parents,he talked with ma parents etc etc..but now he seems to have changed.earlier after every small fights we had I used to come to a conclusion that we werent compatible and lets part ways.he would always try to convince by doing something or the other.but now things have changed,after crossing all the limits(which I decided I would never let nybody else to do after been ditched by my x,but somehow this guy convinced me for every damn thing)now he has totally changed.now he feels I m been very possesive etc etc and now after every small fights he calls the relation quits.this time he wants to end the relation bcz I dint inform him that I was going to market(I dint do d sme bcz v had a fyt)m very mch distrubed bcz of same.I dun find ny reason in this.also I have caught him adding and chating with new girls..he deletes the conversation he havez so that I dont read d sme.m very tensed as to what is the solution to same and what should I do..I feel like shooting all the guys on this earth…everybodyz same…please guide me…