INFATUATION IS HURTING ME?

Im really infatuated with this guy who I barely know and I've been so depressed lately because of him. It started with us just chilling at his house and we end up fooling with each other and cuddling... I also stayed over night at his house once and we basically slept together. He's a type of guy whoes a total a hole and is barely sensitive aka emotionless and doesn't care much other then himself. He admitted it to me and all my friends say the same and I know that myself too. Sometimes he'd treat me like shiit too like all he could ever talk about is . Basically this guy is someone who is NOT a relationship guy what so ever. Sometimes Id make excuses up for his behavior but then in the end we know that it's not true. I really want to get over him... he's making me so depressed! I feel so depressed because Im so into him yet I know it's not going to work out. He makes me not care about other guys around other than him and he's on my mind 24/7. HELP ME!! this is killing me.