Is it normal that i love the smell of sweat?

Not that nasty men's locker room smell, but the fresh, "boyfriend just got off the treadmill" smell. When my boyfriend smells like musk and sweat, it turns me on like crazy. I even walk up to him and push my face into his chest just to smell his sweaty shirt after he's worked out. It makes me want to tear his clothes off. Is it normal?