I swear he hates me.

My fiance and I have been together for almost two years. He got a new job in August and has been really distant since. But lately it's just getting worse. He doesn't talk to me, rolls his eyes when I talk to him. When he does talk to me it's to answer me with a smart ass remark. Everytime I ask him whats up his ass he freaks out saying, "I fucking work alot ok I'm fucking exhausted." Yesterday when I dropped him off at work a girl was coming out while he was going in and they were pretty happy to see each other, happy like he was when we first got together. I know he's tired, exhausted and work has been mentally draining for him. Am I over thinking? Am I worried for absolutely no reason? I honestly don't think he loves me anymore. I feel so much hatred it coming from him.