I've been friends with this girl for about 5 years (we were students in the same university). When we first met, she had a boyfriend. I was interested in her at first, but decided to be friends once I got to know she had a bf (I mean my feelings towards her didn't go away, I just felt it would be unethical to make advances since she was in a relationship). She had since dated one or more two different guys after then bf. She's been single for about 6 months as far as I know. Me on the other hand have never been in a relationship but I've had crushes on other girls. I am just one year older than her. We have had a few fallouts over the years but have always become friends again. Now she's single, I have been thinking of asking her out. I think (I think) I have been flirting with her, but she's somewhat friendly with guys (I live in an Asian country, girls tend to be rather shy here), so I dunno if she's flirting back or just being friendly. I think she know