Alpha Mail: can she handle the truth?

CS wonders if he should tell a moderate chunker the real reason he's not interested in her:

Much respect to you for your recent posts in response to NK Jesmin, the nauseatingly maudlin Shattersnipe and the portly, uberreactive atheist. Recently, its starting to seem like the entire brigade of fatuous leftist ideologues is surpassing peak shriek in that their inane emoting in response to equality blasphemers like you is becoming more widely perceived as pathetic and tiresome rather than alarming.

You holding firm to the truth, no matter how offensive, got me thinking: I just went out on a date with a girl and, long story short, the only real flaw with her is that she is too heavy (not fat fat but needed to drop 10-15 lbs). We have communicated enough that I'll actually have to provide an explicit reason why I don't want to go out again. The only honest answer I could give is that she is too heavy.

Do I tell her this (even if gently hinted at in euphemistic language)? I know doing something like this sounds completely socially retarded (a couple friends have told me as much) but think about it; if I tell her "we just want different things", "we live too far apart", "I'm seeing someone else" or some other bs, her hamster will be fueled by one of these excuses and she'll fail to confront the real problem which has lead to her being rejected by me and likely any other man with at least a modicum of SMV. Plus, any other excuse I give is a lie. If I tell her the truth she'll likely cry and be upset but at least she can confront her real problem. What do you suggest?

I suggest that this is an excellent application for the Golden Rule.  It's not your responsibility to fix her.  It's not your job to convince her to stop needlessly stuffing her face.  All of us who could stand to lose a few pounds, (and I could stand to cut about five myself), know perfectly well that we're carrying extra weight and what we need to do to get rid of it.  It's just a matter of willpower and lifestyle modification.

Most men have been rejected by women before.  So, do you appreciate the truth or do you prefer the white lie?  If you'd rather have a woman tell you that the reason she isn't interested in seeing you again is that you're too short, or too poor, or too laddish, then be straightforward with her.  That sort of honesty is appropriate for an individual of your straightforward nature and she will likely expect it from you.

If, on the other hand, you tend to prefer the face-saving deception, then that is the tactic you should take. But don't insult her intelligence; if you're going this route the decent thing to do is to make it credible and give her hamster something with which to work.  The one thing to avoid doing is to tell a lame white lie, which only compounds the rejection with an insult.