Gave him my number, he texted, but does that mean he's interested?

londongirl357
A guy in one of my classes (150+ people) always looked

at me in class for weeks, so after the final class I saw him in the library and as I walked past I dropped a note on the table where he was studying and walked away. It basically said ‘I noticed you and think you’re cute, never saw a chance to talk to you, text me if you want, blah blah…’. He texted me like an hour later telling me that he got my note, what his name was, and that it was a nice surprise. We texted a few times but his replies were really slow, his last text had a question at the end so I replied to his question and asked about his hobbies but he never replied. What happened? I’m really confused. Maybe he just used my number to be polite? But he didn’t make it clear he wasn’t interested or anything, and since it's not like he has to see me round in class now or anything why text me if he just wants to reject me. Should I wait like 3 or 4 days after that text (it’s been 2 days) to text him casually asking how study is going or something?

He seems like a really busy guy btw (why his replies were so slow I guess) and quite shy/quiet, so it's plausible he got busy/sidetracked and forgot to reply? But he hasn't texted me again =S
Gave him my number, he texted, but does that mean he's interested?
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