Is it normal to just start liking guys all of a sudden?!?

For some clarity, im a 20 year old dude. Recently all I've been thinking about is cuddling with another man, and I dont know why this is happening!! The occasional woman will pop into my head, BUT ALL I CAN THINK ABOUT IS MEN! Like... wtf... I mean, there was a time I had a crush on this really cute guy during highschool, but that was it. He was the only one until recently. All the other people I've ever crushed on have been women. I've never dated anyone, which just makes me more confused. Maybe I just like a specific type of guy. Idk. My brain is not braining rn. :P