Moral Dillema

I had to write an opinion paper on a book I read in class. It is a very sensitive issue to some people and can really hurt a professional and personal relationship if not handled carefully. Normally this is not a problem, we all learn how to play the game and use our mental filters. However, I have gotten to know this teacher and have a lot of respect for him and his opinions.....my opinions may not necessarily match up with his on this paper. I know it is "just school" and "just a paper" but for those of you who know me well, nothing is "just...anything" I'm concerned about turning in my opinion paper and possibly offending this teacher. Normally I would just write a bullshit paper and hand it in to avoid the conflict, but as I have told him, he is different than normal teachers. A part of me feels that if I turn in a bullshit paper, it is disrespectful to him and the rapport we have built. He deserves more than a bullshit paper, he deserves the truth. But do I risk the relationship since it is "only a school paper"? So, I wrote two papers. I haven't decided which one I'm going to turn in yet.