Suggest Remedy For Cuts On Penis Causing Burning Sensation During Intercourse

My boyfriend and I has not been sexually active in a week in a half. So we just had sex and he didn t last a minute. His excuse was he had a burning feeling because he has small cuts. I asked him was this the first time and he said yes. My question is by me being wet when we started how is that possible. Unless he has been having sex outside of the relationship