SUBREDDIT: r/relationships
TITLE: My girlfriend [20 F] is slowly developing a moustache and I [20 M] am feeling less attracted to her. What can I do?
POST: I have been dating my girlfriend for 6 months. When I met her she had a little bit of hair on her lip (very minimal but noticeable). My relationship with her didn't get serious for a while so I didn't think about it, but then when it got more serious it bothered me a bit more. In early December she shaved, I suppose for Christmas or something, but then after a while she let it grow back. My point is, she must know it's noticeable. I know it's such a superficial thing but it's a really big turn off. Is there really any way I can bring this up to her without hurting her feelings?
TL;DR: 
My girlfriend has a moustache and I am not feeling attracted to her anymore. How should I discuss this with her?