I need a solid slap across my face. . .

I'm going through a really bad mood right now and my boyfriend just moved in with a girl this week. A girl I don't know. They're obviously hanging out. They're cooking together. He refers to her with a nickname. They're watching TV together, harmless but I can't calm down. He always said he couldn't wait to get a house with me. Cook with me. Cuddle and watch TV after work with me. But he moved in with a girl and I'm green with jealousy. He'd move out if I asked him. He asked if he could move in with her in the first place and I said it was fine. But I'm so jealous now. I know he's faithful. She has a boyfriend I think. But I can't help it... I'm freaking out and I can't control it even if it's irritational... I think this is just a rant.. I'm sorry ladies..