What happened? I need some honest input!!

So Okay ill give the short version....I started talking to this guy back in April....as it turns out we reconnected after 17 years...Ive always had a huge crush on him and he hit me up on FB. So we caught up and really hit it off and within the month we exchanged I love you's...yes i know it was fast but being that i am a person that acts on impulse i just went with it. anyways...a few weeks later he abruptly stopped talking to me. I was left there like what did i do? Just as i was about to give up on it he got back in touch with me and was very apologetic and basically said he scared himself and wanted to move slower to which i obliged. Now here we are in Oct and weve been planning to be together saying I love you and whatnot and on the 9th he comes out with that hes not ready to take on a partner and that we arent gonna be together. hasnt spoken a word to me since....what do i do? what did i do? why did he say he loved me and wanted this if he didnt? i just want some input...im tired of giving my heart to someone and then they dont take it seriously. thanks in advance!

@susiedqq no. It's the exact opposite. He told me that he hasn't been in a relationship in over 10 years. I've tried to find out why and he won't tell me.

It sounds like he's scared of commitment to me, since he stopped talking to you before and then said he got scared and he needed to take things slower. It deffinately sounds like something else is going on for him, he may of got scared again, or its something more compilcated then that? was this all via facebook? if so, i think its very easy to say things over the internet and to play pretend. When you're face to face, you can obviously see ppls expressions, hear their voice etc and get a sense if they are genuine. Its not right for him to lead you on though, what ever way yo choose to have your relationship, then for him cut contact when he gets scared. By the sounds of it you didnt do anything wrong and its his issues.