DDknight wrote:
i don't know i haven't asked her. to me it sorta feels like we are but i dont know
Kraftiekortie is right. First order of business, find out where you stand before considering taking her to dinner.
After establishing whether she likes you back/feels the same way about you, and if she does,
then ask her to dinner. Have a set day n time in your mind so that if it gets to the stage of a formal 'date' you have a concrete plan you can propose.
You're flatmates so presumably you know the foods she likes.
Have somewhere in mind you like to eat, or want to try out, then ask her if she wants to go with you x night of the week. If she's unavailable, ask her what works better for her and see if you guys can come up with an alternative date that suits you both.