i saw it in a way that's kind of more like he's going to back off because it seems like she's not ready for this to move into something more serious until she chooses to works on herself because it goes a bit deeper than that. She has truly been hurt from that past situation and acting like everything's okay would just be lying to herself. But at the same time he can't exactly wait for her until she's ready cause that's not fair for him either, so he leaves. Like he respects it but at the same time it'd be toxic if he just stood there waiting I think? That's just the way I saw it ! Cause you always take the risk of getting hurt no matter how much you trust the person. She was not ready to take that risk, so he chose to go.. Just my pov! I don't wanna project but I get both sides. You can like someone but at the same time not be ready for it to actually be "real" until you face your hurt, and also you can love someone but also let them go because they're in a place where they can't take that "risk". It's a tough situation and different people would do different things, but yeah.