Most Helpful Guy
Actually I wouldn't limit this to guys. I think people have trouble telling the truth, because they preempt all of the reactions and fallout that will occur, if they did tell you the truth. Most of the time, when someone hears bad news, the reaction is never good; I personally don't like to see people cry, if their getting their heart broken (I like seeing them cry, when watching a romance / drama movie though, don't know why).
Some people think that it's easier if they reduce the amount of methods that they can be contacted, by dodging you, and taking the passive approach, rather than telling you straight to your face. I know very few people that actually deal with conflict well; most people I know, try to avoid it like the plague! I mean think about it, sometimes white lies are better to hear than the truth, only because they're more digestible from the real reasons.
That's why you always hear the lines, "It's not you, it's me". That's more digestible than, "No, it's not really me, but it's been you for quite sometime, but I didn't get around to saying anything, because really I don't care any more" etc.1THIS IS NOT RELEVANT ANYMORE