I have a male friend with whom i have a casual sexual relationship. Fwbs, I suppose.
We are in a bubble...
We spend most weekends together but don't always have sex.
We had sex at the weekend and I noticed that he had a fishy odour.
I've always associated this with recent sex. We have told each other that we aren't having sex with anyone else currently because of lockdown. He is being very cautious generally and is quite anxious about going anywhere or even meeting up with friends in the park. He works from home so doesn't have much cause to go out.
I've never had any reason to doubt him. He's generally an honest man.
And, tbh, we've only confirmed exclusivity due to lockdown. There was never any expectation of it before.
If he has had sex with someone else, I'm not bothered about the sex, just that it would mean our bubble wasn't the only bubble he is in!
Do I broach it with him? Are there any other explanations?