Friends Things, and Choices

So I have realized something. I am not always going to like the things that my friends do. For example, a friend of mine is dating this guy. I don't agree with it. She can do so much better. I know this, but what can I do? It's up to her to do what is best for her. I can say all I want that I don't like him, but when it comes right down to it, that is all I can do. It is her that decides if she doesn't like him. My problem is that I don't want to see her hurt. I can see that happening. It also comes right down to I don't do things that people agree with. I choose to do things. We all do. Its all as well I guess. You can please everyone some of the time, but you can't please everyone all of the time.