<human>: Can you provide a brief rundown of the text in within 3 sentences?

Ok so I met him a couple weeks ago, talked a lot over facebook and he ends up asking me out like a few days ago. I say yes because he seems like such a cool guy, but now I'm starting to regret it? 

He put it on Facebook instantly, and all my family have congratulated me about it (I've never had a proper boyfriend before.) and now I feel like it's an extra layer of guilt if I were to break it off. 

I have really bad social anxiety and don't 'do' physical contact, which is bothering me more than him, I'm guessing. Also, I just want to be friends with this guy! I don't think we know each other too well to be rushing into a relationship; he even said that "we're still getting to know each other." - which I found odd because I want to fully know someone before I date them. 

I just don't think I'm ready to be in a relationship with this guy. So what do I do? Do I tell him now to save heartbreak further on down the line? Or do I wait it out and see if my feelings change? He seems super into me and I think he's a great guy, but I can't see myself at this moment getting any further with him, you know? I'm seriously worrying over this guys!
<bot>: Boy asked me out, few days into the relationship and I don't like it at all, should I break up with him and tell him to just be friends first?