u/MountainAd3552

So I've been dating this lovely NB individual for a few months now (going extremely well, very happy), but there's been a small issue with the sex aspect. Everything else is fine, but we keep trying to actually go all the way, and for lack of a better word, they don't fit. I know it's probably fine, and they keep saying it is, but is this normal? I'm the bottom, by the way, not sure if that's relevant, but I just thought I'd ask if this is a normal stage type of thing, or if I try everything. Also, for context, I'm 19, they're 19. I think this is mostly for me to be more secure in the fact that I might just be too, for lack of a better word, tight, but I mean, I'll take recommendations. I'm not on here super often, but I'll try to respond to anyone asking in the comments.