In Love With my Crush and the Pain

So like any classic 'I have a crush story' I meet a guy and I really did fall for him as soon as I looked at him like really saw him. He is just so amazing and something about him makes me want to know him more like a puzzle being put together. I have liked him for a good year now and trying to move past it cause I had an opening but was too blind to realize part of me has always hoped for a glimps of hope but I have been look for the glimps for so long it actually hurts when I even think about him or when I first fell for him. No matter what I try he always happens to be friends with whoever my friends date. One of my friends Carly lets caller her (none of the listed names are really there names) went out with Jim and at that time Dave the guy I like was best friends with him. As time went Carly broke up with Jim and Dave and Jim grew apart. Then my other friend Stacy got in a relationship with Kale and Dave and Kale became close or closer and now my friend Carly is dating Henery who is now good friends with Dave too. No matter how hard I try to move on every time I hear his name or see his smile I can't forget him how do I move on from him when part of me doesn't want to and I can't stop really from seeing him?