Haven't nurturing this idea of trading a Bitcoin in the near future,but one question that's always come as a concern to me is. Is proper for me to trust a friend of that high magnitude ?
Verification is better than trust. Be sure to get your transaction in writing, if you absolutely must do such a trade. Trust your friend all you like, but that does not mean they are 100% reliable. We all trust the people we trust until we do not trust them anymore.