This is where you get off track quite a bit. As a Christian, you NEVER let your conscience dictate what you do. Why? Because even the Bible says our heart is desperately wicked. We are not free to do whatever we want to do. Whether it offends the brothers or not, it goes much further than that. It's offensive to God! There is NO excuse for immorality in the life of the believer. Here a tip. Forget what you feel. Forget what you thought. Forget what you've been taught, and go on what the word of God says. And it CLEARLY says that there are some things that Christians should have no part in. Plain and simple!