To add to GPM, the times she goes dancing she is with a group. The bbq was at a mutual friends house of her and her ex. It appears, and of course I can only assume, that the exes you have seen or heard her with are part of a circle of friends and she is not bringing them around you, they just simply happen to be there too. I also dated a friend in a small circle and recently introduced my new date at a party. The friend is still a friend, we just decided we were better friends than anything more. He is happy that I have moved on to someone that I am happy with. We all have a past and it is that past and experiences that make us who we are….and the woman you have become interested in…. As GPM stated, talk with her…..best to you!!