Relationships and Friendships! SUCK!

So that guy I mentioned, Alex?

I have a problem. I mean, a problem with my personality. I really shouldn't put the blame completely on myself, but really... I could solve the problem completely if I worked on myself a little bit more.

I am too nice. Me and Alex have been friends for a while, but our relationship is confusing, and he is uber needy. For a while, I thought I liked him romantically, and he thought the same thing. But I didn't. We aren't right for each other. I can't say that I understand the person that Alex is, but in general, I feel like we don't really connect with each other-- at least, I don't feel understood, and Alex does things that I don't understand, either. But I can't explain this to him, because I love to make people happy. (That's probably only because I like it when people like me.) By being too nice, I lie

Simply put, I haven't been able to tell Alex that we shouldn't be friends. Being friends, to Alex, is something that can morph into a more intimate relationship. And it doesn't matter how many times I try to tell him-- Alex doesn't get it that I AM SURE that we aren't right for each other and he SHOULD NOT be expecting our relationship to turn into something more.

He says that our friendship is more important to him than making it boyfriend-girlfriend, but I don't think he's being honest with himself. Maybe it's not my place to judge that, but I do know that our relationship is totally weird in the context of "friendship". Alex gets depressed about things, and is incredibly lazy. I feel bad for him, like maybe he needs support or something. He's really just NEEDY. He texts me just about every day, like my answers will be a bright little light shining in whatever boredom, laziness, or depression he might be feeling. But it's not my job to help him with these things.

Being friends with Alex is hurting me, because I put a lot of energy into the relationship, and I try to help him out by making him think he's not bothering me, but really, I'm just leading him on, as if our friendship could turn into something else, which I have denied, and I think he still believes is possible.

I have been through this with Alex before, but I really am going to stop it all now. It is easier when I am not attending the same school as him (actually, I'm in another state ha ha ha...) and I have support from my family, and I'm at home, not just mentally but physically.

My mom gave me a paper with what she'd suggest me to tell him (even though he's not going to understand it.) I've modified it, and here's what I will tell him.

"It's not working for us to be friends. I'm going to stop texting and talking to you. I need you to honor my feelings and not try to talk to me anymore. This isn't anything you can change about me or how I feel. It just is. You don't need to understand. I need my space. No more texting. Thanks."

And when he asks "But WHY?!" I will say, "Don't text me anymore." Repeatedly.

This really makes me sound like a horrible person. But there really is no way to get Alex to understand this problem. I shouldn't have to be friends with someone if I don't want to, and there doesn't even need to be a reason. (I'm trying to convince myself here.) I can't explain it to him, and it's not my fault, so it's not my problem, either.