SOS please help

Jackie

So this weekend my boyfriend and I were planning on having sex, and I finally decided I was ready (I’m a virgin) my parents were out of town so I figured what better time (I’m 19 he’s 22) so I even bought cute lingerie removed every hair on my body and was ready. I was going to start birth control the day after, as we were making out I ended up being naked and on top so I said let’s switch positions so you can take control during my first tim and as soon as he was gonna put it in I said stop

Put on a condom so he did. And as soon as he put it on his dick went soft. And there was no bringing it back. Since Saturday things have been weird and he’s been distant I don’t want to loose him but I feel like I might what do I say I feel like it’s my fault for some reason and I feel awful