My narrow mind?

Will you reject a friend because you share a different set of value? Since Friday, I found out something that my friend does which I totally can’t accept. This has bothered me since…I tried to tell myself it’s only a rumor, but more facts have proven. I can’t act like I don’t know anything. I am the kind of people who you can tell how I feel from what’s on my face. What he does have nothing to do with me, it is his personal choice in his private life. However, he lost all my respect for him, and it bothers me even more when he and some of my other friends think it is acceptable and has no shame of it. Is it the cultural conflict or is it different perspective between man and woman? Who knows? Maybe I am too narrow-minded. I really can’t be a true friend to him anymore, just because his value is way to far from what I can handle. I wish I had never known that side of him. I once treasured our friendship very much, perhaps higher expectation results bigger disappointment.