I am borned on march 21st 1991 and i would like to know which signs am i compatible with? am i on the cusp? ..?

i've been dating a pisces for about a year now and we argue a lot and have a lot of disagreements and he plays a lot of mind games and also says other girls are very beautiful behind by back and i get very sad about this and he lies to me a lot and i wondering are we even compatible? ...or am i wasting my time, i would like to know others opinions! please...someone tell me something that makes sense!!!