I AM WITH A YOUNGER GUY, BUT I DONT KNOW IF I SHOULD STAY WITH HIM!

Well, for the past three weeks I have been with a guy that is 4 years younger then me. I am 19 and he is 16, I love him very much and he loves me as well. We are great together! the only thing is that his mother hates me, so I never get to see him unless he lies and misses school and stuff. I have not seen him or spoken to him in about a lil over a week. the only way we talk is though IM and Email. I don't know anymore if what I am doing with him is right. I miss him so much and it kills me not 2 see him! He says he misses me to. His Ma wants to talk 2 me, but I am afraid to, cause I don't know what to say to her. We have a lot of drama with his Mom. It hurts to be with him, cause it stresses me that I don't see him and all the drama with his ma. But it would also kill me 2 be without him, but I don't know if I can take it anymore! Should I stay with him and try and work though it, or should I break up with him and move on and save myself the stress? Please someone out there help me and tell what 2 do! I need all the help I can get!