Yes he is as far as the report available. What I was trying to say that he had a socks to cover his cock with a rubber band on it while shooting those sex scenes . In the extended or deleted scenes we can see he is pushing a lot on yanns ass , there is no covering . Id am not wrong the initial extended scenes had little more hard hip movement of Kevin . Which means his cock inside the socks is rubbing against yanns butt crack, with the repeated movements there are chances for getting his cock harden . Also when you see his face the expression of getting ejaculations seems real and also when looking his ass at the end it looks like his ass squeezes tightly which is likely to be a an accidental real one. Yann won’t have any issue as he is a gayI think Kevin is straight