Im 16 years old and Im in long distance relationship, I've been going out with my boyfriend for about six months now. He's such a great guy and he's been treating me well but I find that sometimes he's too busy for me. We haven't been calling each other for a while... We're not connecting anymore... The problem is I love someone else, I've known him for a while and said he liked me. And I can't stop thinking about him, I've always liked him but didn't know how to say it, I can't control how I feel... I'm such a terrible girlfriend for feeling this way... Is it normal?. I don't know what to do at this point...
Please help

Then you break up with him
You're long distance dating, not married to him. This is not that big a deal at your age.