Ugh Boy problems...

So I have no clue why I do this to myself. I've been talking to this guy I've known for years he's in the army so he's not around but he'll message me he's been there for me. He text me the entire night when my grandmother was passing away he was there wanting to know what was happening making sure I was ok.. but lately he's only there when he's bored and wants someone to talk dirty to him.

On the other hand I had a friend over last night that I haven't seen in a while had a great time. He talked to me about my family and his family... he helped with things I couldn't do myself around (well I didn't have the tools to do myself) my apartment... we actually had a conversation about things that didn't have to do with sex... He told me he thinks that I am very pretty..

He's the type of guy I'd normally go for he's a good guy I guess would be a smart choice and i know he wouldnt hurt me but I can't get the army guy out of my head. I messaged him once guy number 2 left and he read it but didn't reply... all I said was "Hey babe you up?" And I got nothing.. he hasn't talked to me since Thursday..

Why do I want the things that hurt me?