This Sunday, my family and I are getting together for lunch, to celebrate my birthday. Here's where the problem lies: Whenever my grandpa is around my girlfriend, he touches her and makes sexual comments to her, making her (and when I find out about it later, me) feel extremely uncomfortable. This has been going on for a long, long time now and I really don't know how I should handle it. In the beginning, I told her she should try to steer clear of him. I told her I would try not to leave her side, but if I did, she should be on the lookout for him and get away from him if she sees him approaching. "Don't let him get you alone," I said. Also, I haven't said anything up until now, because he's my grandpa, because he's 80-some years old, because he's had several strokes (which makes me think that he doesn't even know what he's doing) and because if my grandmother and/or my mother were to find out about what he's been doing, it would absolutely devastate them both (and when this first started happening, my GF asked me not to tell my mom about it). Maybe I am kidding myself, thinking that gramps doesn't know what he's doing, because he only approaches her to grope her and talk dirty to her when she's by herself. I guess this tells me he's smart enough to know that what he's doing is wrong (as much as I hate to think that). Do any of you have some suggestions on how I could handle this sitch? I am thinking about letting my brother in on what's happening, in hopes that he can help me keep an eye on gramps. You know -- in the event that I have to go to the bathroom or something. If that doesn't work, I'll just grope his wife and see how he likes it!