Should I continue to like this Libra guy or should I give up?

I am a Scorpio girl and I've known this Libra guy since freshman year high school but we only recently met again after college started. We haven't spoke to each other since high school and I was the one who approached him first and began to befriend him again. I noticed that I became increasingly attracted to him and he made me felt very comfortable and happy whenever I speak to him. But being a Scorpio girl, I get easily jealous since he has PLENTY of female friends. At first I really didn't like it and I tried to stay away from him so that I could concentrate on my classes instead of being irked at him for having too many female friends even though we aren't even dating and I'm not even sure if he likes me. But then, as soon as I became detached from him, he always come by and start a conversation with me again and I began to have more feelings for him. Not only was this a problem for me at first, whenever I text him, he always reply but then after a few text messages he would always NEVER answer back and act as if nothing happened whenever we meet in school the next day. Thanks to him, I got used to whenever people never answer my text so I'm not annoyed anymore whenever someone doesn't reply. But I am really unsure if I should ever confess to this guy. I really like our friendship and I think he flirts with me from time to time. But I just feel like he treats every girl the same way so I'm really unsure whether he's even genuine with me. I would say that I can read people who tend to lie easily but I don't want to assume too much. But it could be possible that he's only nice to me because we help each other out with school work. So I asked if he wants to hang out in the summer and he said YES! This kind of got my hopes up but I'm still not sure if it would be worth it pursuing this guy. I can't read his actions at all. He's nice to be around but I can't understand what he's really thinking. But I don't want to confess and then he's going to reject me and everything would be so awkward. I really like the friendship we share right now but I kind of want something more. Should I wait a bit more and see after this summer? Or should I just work on giving up now? I was planning to confess to him when I graduate but I'm getting a bit impatient with things and the more I like him the more it feels like I want to tell him. Any suggestions or thoughts?

I think the pain of losing the relationship would be more painful unfortunately. Thanks for the question, made me think about it a bit.

It was an accident I was going to post it in the Astrology section but couldn't change the forum so yea ;p