My Friend Started Harassing Me.

Hi! My friend and I have been together for two and a half years. In the beginning, everything was as ended as at every beginning of a new relationship. Half a year after we left, I catch him lying to me about things that were trivial, but that annoys me because I wouldn't allow myself to lie to the man next to me, and I hate someone lying to me. Then I kept sometimes understanding that he was following this and that, but I didn't say anything because he was constantly justifying himself. His attitude towards me is not the best. Sometimes it hurts me a lot by pinching my cheeks by squeezing me that my tears are ingesting in my eyes and for me, it's not normal and when I share it with him he tells me that he enjoyed me like that and didn't want to hurt me and at the same time he kept doing it in the following days and so I can't understand what's going on at all. Sometimes he'd let himself say something to affect me, and he's always acquitted of how much he loved me. Help me how to do