Should i break up with him?

Me and My boyfriend have been dating for 5 and a half months now and some of my friends say that he doesnt treat me right. which idont get because he is always so sweet to me. we get in little arguments but always make up. and the friends that are tell ing me this ( only two friends) have dated him before but they have nvr had a long relationship with him like i have had. could they like him again? should i break up with him?