How do I avoid this question without making things awkward

I have a creepy coworker and he’s very nosy. I’m moving w my bf soon about ten mins from my workplace. I’m scared if this coworker asks where I’m moving to. I think I’ve told a couple people so I’m scared he already knows but I know he’s gonna ask anyways. He’s asked me a couple times where I get my nails done which I found really creepy so I just wanna know how I can avoid answering?