Helpppp

Hey everyone, this might be tmi but I’ve seen loads of similar posts already so here I am!! Basically, I’m 18 and it’s important to note I’ve been SA before. I’ve been trying to have sex with my boyfriend but either I’m way too tight, it goes in but hurts and feels like my cooch is being ripped apart n I start crying which is a bit of a mood killer, or else it just doesn’t work. He can fit in 2 fingers but even that hurts a lot. He uses his hands n it usually feels rlly good but we can’t do more than that, I obvi give him head and such and he’s rlly understanding of why I’m not able to do more but I’m too tight!! We’ve tried using lube and doing a lot of foreplay but idk if my tightness is to do w the SA or just being a virgin, or both. I wanna loosen up but I don’t know how. Any suggestions?