realationship

I have been with my boyfriend for 3 yrs next yr will be 4 hopefully the first 2 yrs has been great wonderful but this last yr has been nun but drama  he is the biggest flirt there is he text other girls when we go out he be lookin at them he calls me out my name his very disrespectful but at the same time he tells me he loves me he wants to start a family get married and everything moved in together I love this man with everything I have but I'm just tired of him duin me wrong like should I stay or do I leave ?? 3 in half yrs I've been with this person I really do love