It's so difficult to know if someone is the right person. And what if that person has lied before (about his faith) but you are rather sure he's telling the truth now. But then, is he really telling the truth or is he just leading you on? I know being a Christian does not include being a doormat, but how does one not hurt someone's feelings (if it comes to refusing) because that person has been a great friend? I think it's impossible...