I'm trying to let him love me.

I have really bad trust issues and I love my boyfriend more than anything he's my baby, my world, the LOML. But we get into fights a lot. And I mean a lot and it's because I can't just let him love me. I try so hard but I have really bad trust issues and I'm scared to get close. The trust issues aren't his fault and I have a lot of family problems that only he will every know about because it's none of anyone's business. I am just so scared I'm going to drive us apart and I don't want to lose him. Please help!! We've done nothing but argue and every time we get into it we say incredibly hurtful things to each other and idk what to do.