Bf (M26) has rammed into my (F 25) ass twice now. What do I do? (8months together)

To my knowledge this is accidental, but it’s happened twice now and it’s been pretty much full insertions and it’s been one of the most painful things I’ve ever experienced. I’ve laid there full on sobbing both times and he apologizes but after reading so much stuff on accidental anal penetration, it makes me feel like he’s purposefully done that now? We been in both a sideways cuddle position and doggy so it hasn’t been the typical missionary position most people have this problem with. To be fair, I get very very wet so it’s pretty slippery and I love rough sex, but he has expressed great interest in anal before. This last time, as soon as it went in me, I jerked so naked that my head hit his and he was pretty much focused on that for a bit. I don’t know how to feel anymore. My sex drive took a plummet and I’m almost scared to get back to it. What do I do?