Woman here, just wanted to let all you guys out there that are struggling know that if you meet the right person sex will get better lol. When i first met my bf who’s well above average we had to take a lot of breaks because it’d start to get painful pretty quickly. After like 4 months of consistently having sex I just started to get used to it & we do literally any & all positions now & lube is also super helpful. The vagina can stretch to birth a baby, if you have sex enough & consistently it will stretch to fit it lol. But if we go even a week 1/2 without sex it takes a little more getting used to again. The only position we can’t really do is him laying down & reverse cowgirl, it just doesnt bend that way to work for us, but we still can sitting up on the couch. Also it really helps if you can make her finish during foreplay