Well in every situation where this happened, it was at times when I was most active, confident in myself. Even in those times I am not one to be outgoing, but when I say active I wasn't so much hiding from the public so much, I was out and about and meeting people in a passive way. I mean going and doing activities and being just around people more than at other times. I feel very strongly that my expression of self in these times were what made women approach me, sometimes when I least expected it. I wasn't doing anything in particular with regards to women except caring for myself, enjoying my life and being content with where I was. It seems like simple thing to say but one of the most difficult things to pull off since most (at least a lot of us on this site) struggle with being content with ourselves and our lives where we are. But I think more so than the extrovert this is key for attracting females whether we get ourselves to approach them or not. For the introvert, we're not so outward speaking and vocal so being able to exude the confidence without those vehicles to do so is much harder but is possible.

think of this scenario as I try to illustrate. first imagine what many would call a "wallflower" being all shy and hiding in the corners almost seemingly afraid of the crowd. That is one type of shy person that lacks confidence and is unsure of her/himself. Then think of the quiet but solid presence in the room. The one that is not engaging everyone but is able to gain attention where people look and are curious about him/her. These are polar opposites but both introverts. One shows confidence the other does not where both are not the outgoing type.

I dunno if any of this makes sense but it's an attempt at an illustration of what I'm trying to explain. Hope it helps.