How to proceed?

During one of my uni socials a member brought her housemate along, now she is very pretty and after a little bit of conversation (mainly flirting) got her number, and last week (socials are once every week) i walked her home as she was quite drunk, nothing happened, i walked her to the door gave her a kiss on the cheek and left it there (i should add that i was holding her as we were walking back, started round her shoulder, then i moved to the waist) This housemate doesn't normally come out on socials Now after walking her back home she said "see you next week" now i have no idea whether this was cos she was drunk (and people say random things when she's drunk), just being friendly or wheather she was kinda hitting on me I want to ask her house mate (the one who actually comes to the socials every week) about what she says about me (and all that) but i'm not sure i trust her enough not to rat me out What should i do; should i continue flirting whenever i see her, or should i opt for the "get the friend to find out what they think of me" route, my mind is saying the former as i think the later gives of a lack of confidance

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