angell1 asks about NOT dating.
As far as I can figure out right now, there is NO Bad reason to NOT date a person.
Truly, even if you are severely bigoted, and therefore refuse to date anyone from a certain Race, THAT is plainly NO Sin (even though the bigotry itself might be a Sin).
It is your body, and your Time.
You are the only one who is empowered to make decisions about who you agree to spend time with (and, your decision in FINAL).
If this were NOT True, then a Messy axe-murderer could ask you for a Date, and you would be Forced to go out with him.
So, if you see a guy wear a dumb T-shirt … or if you don’t like the way he combs his hair … you are Perfectly allowed to not offer yourself up for a Date.
With that said, if the guy is Messy … that’s a GREAT reason to NOT Date him (that is, unless you happen to be a Slob too).