Most Helpful Guy
Yeah he did send you a lot of mixed signals. I think he texted you for an hour because he felt bad for what he said. To be honest I think maybe some of it could had been directed at you because if he knew you was around then he really had no reason to mention it or say it around you if it wasn't directed at you. I think him texting for that hour was him feeling bad for saying it. I think it's tough hanging around an ex in general. And i do think it sucks that you have so many classes with him. I don't think he is happy and he if putting up a front pretending. I don't think he is fully over you. I think him not speaking to you at school is his way of trying to move on.
Most Helpful Girl
It sounds like he just isn't sure what to do with you.
He likes the idea of being friends, but it's clearly still difficult for him. This is why he keeps saying he wants it, tries it, then backs out afterwards. Those "tries" may be very difficult for him.
Honestly, I'd continue giving him space.
Trying to be friends *right now* just isn't working yet.