We’re Sexually Incompatible

My current relationship of 2 yrs that is about to lead to marriage, but I’m having issue having sex with him. My previous ex had a small D with which he disflowered me, my new man D is big and I’m always scared of having sex with him. I can’t free my thighs and legs, I get hurt every time we try to have sex. I don’t want him to leave me, he is complaining now, what can I do? I can’t even do missionary self, it’s very painful not to talk of other sex styles. Please, what can I do? I don’t want to lose this relationship because I’m scared of sex.

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