It's only going to make it worse.

He has had the same problems as me, he has a lot in common with me, he is nicer to me than just about everyone around me. Since we've had the same struggles, we can sympathize with each other. The problem is that he's too nice. I'm going to get attached, I just know it, I probably already am. I know that he cares now, and that's not a good thing. If he cares, then I'm going to care. I don't want to open up to anyone anymore, it's going to end up fucking me over.

But, it's too late. I'm attached now, and it's only going to lead to me getting fucked over. Why bother? Why bother caring about people? It will always lead to getting hurt, no exceptions.

Trust no one.
Love no one.
Feel nothing.