Hello there!

So. I am one of the only girls in the entire software department. And while I can handle my coworker's' making gross often misogynistic commentary occasionally, recently I've been dealing with a lot of. Borderline situations with other guys working with us. For example. This one guy whose definitely double my age at least constantly comes to talk to me and will grab my shoulder as if to pat it but will keep his hand there far longer than socially acceptable (he doesn't touch anyone else). And my boss started hunting and being a touchy feely person and asking if I live alone (he only comes down to talk when my team is gone and I'm by myself) and overall some guys just give me the creepiest vibes. I really trust my gut about people so when it's blaring alarms I'm always looking for the easiest way out but professionally it's harder. I'm too afraid to say something to HR because it's such a boys club I'm afraid that big stink will end up with me out on my butt instead.

Any tips on how to gracefully handle creeps?