Scenario that one of my friends are in. He likes a girl, almost to the point of trailing off when talking to her because of how much he's fond of her. Now, they've been friends for three years, and the subject of them dating has come up sometimes. Even people around them say they make a good couple. Now, he's the kind of guy, like most other people, who are scared of expressing himself, and shys away from telling his feelings. He's recently told me that he has resorted to instead of telling his feelings outright, he gave her a letter telling her everything he feels about her and even though they're friends he'll do his best to keep the relationship from dooming it. His question to me, because of how religious he is, is whether his desire for her is lust, because she is a very pretty girl, or just a desire for something he's never had, which for him would be a relationship where he wasn't being used.