^ For all you know, he could be ignoring you online because he expects YOU to message him first. Because that’s what you’ve been doing so far and he’s getting used to it. So DON’T DO IT. Don’t give in. Don’t type up any messages. Don’t even think about him. Life is too short for unnecessary stress such as this. Some people are too obtuse to realize how their actions affect others and that’s selfish.
Why do you miss him? Because it’s a crush. A crush gives you a high…kind of like a drug. You think about the fantasies you have of being with him…and you miss them. Sometimes the fantasy that you build in your head about some guy is MUCH better than what the guy is like in real life. It’s like your mind creates a better version of him, lol. It’s sad, but common. A few hours of flirting is no indication of what the guy is like on a regular basis or what it would be like to live with him. Sure, he was fun for a while, but he could be a challenge to live with or to even have a long-term relationship with. It’s difficult to even have a friendship let alone a romantic relationship with someone who can’t respect you during tough times. You know you’d be upset if a female friend treated you like this frequently…so why make excuses for a male friend? You’re afraid of losing something you didn’t have in the first place. A crush is not a relationship. The only thing you lost is self-respect. By “losing” him, you might gain peace of mind and some freedom. Keep yourself busy with school, go work out, hang out with friends, watch a movie (maybe not a romantic one), read a book, visit your family, pursue a hobby, do some volunteer work, pray regularly.