How do I get over this?!??!?

[Jessica]

Ok so I like this guy, and he just got into a relationship with the same girl for like the 4th time, and I've liked him for a little over a year or two, and I can't get over him! He's dating this girl, when I went on Instagram, I saw a picture of them kissing, and I was like "well, that hurt ALOT."
I have never dated this guy, but he's really nice and really sweet, but I just don't know what to do, I'm always too scared to tell boys how I feel, so I missed my chance to ask him out.
So what do I do? I just feel upset inside, how am I going to get over this? I REALLY like him. I'm afraid to say anything to him, and I don't talk to him anymore, we were friends last year, he probably doesn't even remember me 😢