Last night I had anal sex for the first time. I was the one on top. I slid in pretty easily but after 6 inches I hit a "wall". I started pumping going deeper and deeper until all of my rock hard 7" cock was pumping inside my partner's ass. I used lube so there wasn't any rubbing but it felt uncomfortable hitting that wall. Is my partner small or will I always have this problem with a rock hard dick? My partner said I'm the hardest he's ever fucked. I bet he was sore that night.