okay, this is what i`ve got so far:

(here profile is set to private, so I sent her the fallowing opener)

me:
subject: you`re stupid
how am i supposed to write you something clever if cant get any information about you?

her:
subject:you`re stupid too!
well, thats on purpose. that way I make sure weird people dont text me.
do we know eachother?

me: apperantly, as you can see, it doesnt work too well. maybe you should come up with something better but you know what usually helps? putting up a really bad profil picture. thats how u can prevent people from being interested in the first place.... not that im interested..

her:
hey thanks for the hint! but is it my fault that i look this pretty?
okay, so i guess this answers the questions if we know each other.
btw. you`re profil is set to private as well

me: well, i too have to prevent weird girls from sending me messages. that can be very annoying.
who said you look this pretty?

her: i say that! no one else does...

i saw that she changed her profile picture after the last message she sent me.
now, what would be best to text back? does she want me to say that shes pretty? i thought about something like

i`d say that you`re pretty but looks arent that important to me. so whats behind that pretty face?

more options:

"Isnt that a little selfish? I think you should let other people decide if you`re pretty"
then she might ask me if i find her pretty and i could neg her a bit.

i think throwing in a story to dhv myself would be to much, right?