What does it mean when a guy opens up to you?

Anonymous
I went on a trip and this guy from my school who is a year older gave me his number when we were talking a bit. We barely spoke on the trip. We started texting for the entire night till 3am.

He kept on texting me asking me if I wanted to ask him anything. He talked about his past and some of the girls he used to hook up with and prom coming up.

I was pretty surprised considering we barely spoke on the trip and now all of a sudden he was opening up to me like we were close. He started admitting to me that he thought I was cute and complimenting me on my looks and body.

Why would a guy be like this so soon?

He barely texted me today so I'm a tad paranoid, from being so talkative he's all quiet now..
What does it mean when a guy opens up to you?
3 Opinion