Okay, I'm new here, so give me some slack
Personally, I have GREAT difficulty discussing sex unless I'm completely unknown (such as here LOL) or if I'm in the heat of the moment.
I DO like to be cummed on... I have never had it happen to me before I met my new man, but it is a REAL turn on for me. I like it all over... on my butt, my chest, in my mouth, and especially on my pubic area. I also like to spread it all over, with my man's help, and I can masturbate and have a great orgasm when I rub it into my crocth.
Yes, I am EXTREMELY kinky, but I love it. So does my man
Anyway, in reference to your questions, rolemodel, here goes....
I know, for ME, (personal view only) that I can't talk about sexual things outside of the moment. I'm getting better at it, and it helps that my man has patience with me. Perhaps your g/f is shy like I am.... maybe ask her why she really likes it during the moment, when she's "loosened up" (bad term maybe, but I know what I mean LOL)
I haven't tried the cumming on the face thing, but it does sound intriguing... thanks ladies for the suggestions of watching out for the eyes, and how to get it out of hair!!
Personally, I don't think ANYTHING is weird or "freaky" if both partners like it. If it makes you uncomfortable doing it, talk to her about it, outside of the moment, because it might be a "mood killer", but if you like it, and you want to know why she likes it so much, ask her during the moment.
Like a lot of people here said... Communicate, but you might have to try different times, when she might be a little more open to sexual communication.
Hope that helps