SPOILERS AHEAD!!!Miles is one of my favorite Degrassi characters ever, but I gotta acknowledge when my boy is in the wrong.
He DID own up to all of this and apologize, though.Miles definitely should have been way more tactful and actually talked to Tristan instead of making assumptions.
However, shaming your partner for the amount of people they've been with like this is never cool. It's especially problematic here because bisexual people are often stereotyped as promiscuous and shamed for having partners of multiple genders.Then the episode ends with them having sex together for the first time, apparently stronger than ever as a couple.