Ooo...look over there!...
Erm...I dunno hun...
Usually when I apply lipstick, lipgloss, etc. -- it's either cuz...
a) my lips are freakin' dry!! (no Blistex, or Carmex in my purse...AAHHH!!!)
b) I wanna look betta (just in general not for anyone in particular...)
c) I wanna look good for someone in particular -- that is... someone that hasn't seen me yet, but has just entered the room... (sorry buddy!

)
So, personally, if I was interested in someone I would NOT be puttin' it on RIGHT IN FRONT OF him! He might get disgusted at all the funny faces I make tryin' to put the wretched stuff on...LOL
Did she try and look all sexy while she was whippin' the stuff on? I could see doing this in front of some guy you don't give a crap about, or have known for a long time...but not someone who you want to impress (...puttin on lipstick/lipgloss is not our idea of impressing anyone...)
This should help ya!
MUCH LUV!