Really like this Guy

I met this guy earlier this year and I thought he was really cute! It turned out he thought I was cute, too, but I was too nervous to say anything... We text fairly often and his responses are almost always SUUUPER long, so I don't think he's just replying to be nice.... The question is, though, how can I let him know I'm interested??
 He left for college last month but we're still texting A LOT. I just started going to the school he graduated from (I'm a junior and he graduated last year) and he came to surprise me on my first day for lunch :D He also said that he was coming down to eat lunch with me on my last day of class in the first semester. 
​Guys I really really like him and I think he likes me, but I'm so nervous that I'm reading the signs wrong or something... HELP!