<human>: Can you succinctly summarize the text in 1-3 sentences?

So I've been dating this guy [M 18] for the past 3 weeks who is basically everything I look for in another person. Things started off great - we met at a party where we realized that we had a ton of mutual friends, I was very attracted to him and when I told him I was bi, he was all over me and asked me out. For the first week I was completely enthralled by him. He's smart, social, funny, masculine, wears suits all the time and instantly clicked with my friends. 

For literally no reason, this past week I've totally lost interest in him. He hasn't changed a bit, and yet suddenly I don't even want to see him. As he seems to fall deeper for me, I've just become generally annoyed by him. I've kept going out with him in hopes that this feeling, or lack thereof, passes. 

This has happened every other time I've dated someone, but I've usually blamed my feelings on nitpicks about my partners. But now that it's happening again with someone so seemingly perfect, I think it's pretty clear that I'm the problem. I'm personally afraid that I have some sort of personality disorder, and I think I could use some therapy. Cause I really don't want to be this guy. I want to be able to be satisfied by a relationship.

Thoughts? Should I just try to ride this feeling out? Should I tell him that I feel nothing for him, but that's not how I want it to be?

I just want some kind of grasp on my emotions, and any advice is appreciated.
<bot>: I've lost interest in every person I've ever dated, but I want to be able to commit to someone. Help.