Do you think he likes me?

well, i've liked this guy for a really long time and sometimes i think that he likes me back and sometimes i don't. one day we were texting each other and flirting and stuff and ever since then, whenever him and his friends are by me they'll be like "hey man look, there she is." and i'll say hi to all of them and me and alex(his name), talk a little. and once i walk away his friends will be like "yeah, that's my boy!" and they always do that whenever they see me. and ever since the first time his friends did that, he'd always say hi to me in the halls or something. but about two weeks ago, he kinda just stopped saying hi. but whenever we pass each other in the halls he just stares at me. except when we're in the halls alone, then he actually talks to me. and he always stares at me if we're in the same room. but a couple days ago, i was outside and i walked past him and his friends and one of them was like "hey liz, alex says hey." (but alex didn't hear him say that) and i was like um hi. and that friend was like "hey alex, liz says hi" and he smiled a really cute smile:) anyways, i saw them again like an hour later and his friends like, "look lizzy's here again." and they all just kinda looked at me. yeah. and now it's spring break and we haven't talked at all. i really really like him. and i just get kinda nervous when i'm around him. do you think it seems like he likes me too?