You have told us more about what his father does than what your boyfriend actually does. I think you need to get some clarity for yourself on what his rituals are, why he does them, and what the impact is. For example, in his father's case, an impact was not being able to spend time relaxing with his family. If your boyfriend's fear of germs keeps him from being able to be in public places or something like that, or otherwise limits how he can live his life, then it might be a problem. Those are the kinds of things you would want to talk to him about, especially if you are also being limited by it. I don't know to what extent OCD is genetic, but there are medications that can help with it, and therapy can help. Maybe you would want to make a list of pros and cons for your own benefit so that you can get it sorted out in your own mind and know what you might want to do with it.

Rap