Condom made him soft...

So me and this guy were getting it on both really enjoying it so he puts on a condom and in that time he was no longer hard... tried everything, we then took it off and it was hard again, put another one on and it flopped he was so self conscious, said that he was nervous and that he thinks I’m gorgeous didn’t understand what was going on, in the end we did it without and it was great, has anyone had this problem with condoms before?