The MC's dad hid his second gender, so refused to acknowledge him as his son. From what we've seen, that resulted in a failure for the MC to have a normal childhood making friends or being loved for by a parent, and the dad is shocked when he ends up making bad decisions as an adult? Really?!?
Also, let's talk about how self-centered the whole exile is. Yeah, an obsessive ons made a scene, but it wasn't like he led the dude on. The other guy (blonde, in the car) was a FWB situation, so he didn't have the concurrent relationships his dad claimed.