I think there might possibly have been something of a psychological disconnect with your boyfriend. Lots of adolescent boys, especially when they’re in their early teens, have the idea that fooling around with another guy isn’t really sex. Does not count as cheating.

I’m not saying that’s the right attitude to have, I’m just observing that young men often think that way.

Among early adolescents, male/male sexual experimentation is observed by sexuality experts to be pretty common.

A freshman or sophomore in high school could easily continue that sort of early-adolescent behavior without the sense he was being unfaithful to his girlfriend.

It would be interesting to know what his point of view was about the whole thing.