A guy I like

Hi!

I work part time for my dad in his supermarket, and last December I met this amazing sweet guy who's only 3 years older than me. Long story short, we have a lot of chemistry and we fl for each other. Unfortunately the last time I saw him, I didn't get his contact details and he didn't get mine. So I went to work every chance I could on the off chance that I saw him again. And after I hadn't seen him for months, I gave up. I figured he'd quit or something. But then, just yesterday I was in the store when I heard name over the loud speaker. I hung out with him tones, flirted with him, got to know him even more, and fell for him even more. He told me his full name a while back, and he knows I have a good memory, so he asked me if I remembered it. I didn't, so he tried to teach me it. After a while, I finally got it hahaha. Anyways, he asked me to spell it, I couldn't, so he said he should write it down. I added it into my contacts, and then I said I'm not gonna stalk you or anything (we both know I was going to) and he said "well, it was kinda the point haha, then you'd hit me up on Facebook or something" anyways, I said that he should make it easier for me and just give me his phone number now. And to my surprise, he just started saying it! So I messaged I'm last night, and things were going good. But then I said something stupid. He replied, but he went to sleep shortly after. He was the last one to message, and I really really really like this guy. So I wanna message him, but I also don't wanna appear like a kid because he's 3 years older than me. I don't know if he's into me, or if I should message. Help?

UPDATE:

So I flat out asked him and he said that he thought I was cute, but he couldn't. His exact words were

"Umm, alright uhh I'm sorry you're a little too young your cute but I can't ay.."

Rejection hurts like hell.