While She Sleeps

I have a roommate who I've been living with for 6 months now. We are both single and get along awesome. I really like her. We have separate beds we sleep in but lots of nights she'll fall asleep on the couch after smoking weed. When she is snoring away, I'll kneel in front of the couch and pull her shorts to the side and kiss and lick her pussy. Just for a few seconds. I will go back and do it again after a few minutes and she's always wet. I lick it up for a few seconds then sneak off to bed and masturbate.

I wonder if she knows? I have done it about 10 different times. I wish I could just tell her I want her but I don't want to lose her as a roommate.

She's never shown any interest in girls, only talks about hot guys. I'm kind of shy anyhow and really scared to even let on that I'm bi. I'd be happy to go full on lesbian if she wanted me.