Why is sex not working?!?

My fiancé and I have been trying and trying to have sex- we even live together- but we can’t get things to fit. I’m a virgin and he’s very heavily endowed. We’ve managed to get things taken care of in other ways (we get real creative y’all 😉) but I was wondering if y’all have any tips on how to get things to work out? Fingers and things fit, but his width just hurts no matter how much we ease into it.