My bf told me that one of his gay friends sucked his dick

Lizza • Happily Married💍Mommy of two boys. 💙💙 expecting a princess 💜

I just recently moved w my boyfriend to his home town. And he he has a group of friends that they all are really close. It's a weird group of friends. I've found out that they've all pretty much have either have had sex with each other or they've messed around some way in the past. It didn't bother me when I found out that my bf had messed around w some of the girls in his group. Because it was just a physical thing, not the emotional attachment kind. More like I was drunk so I did it. But last night I found out that one of those nights (before he even met me) they were all drinking. Him, his gay friend, and one of the girls were joking around saying they were going to have a threesome. And next thing you know they went into a room, and the girl watched while his friend sucked his dick. I asked him if he enjoyed it and he said no. But I just have this thought that why would he let him? Is he bi? Is he secretly into guys? But doesn't want to openly admit it?