Suspicious or not?

My boyfriend went to a birthday party and there was this girl who kept asking about me and if he and me are still together. (we're almost 6 years together). She asked him to dance and "why don't you dance are your scared of your girlfriend (me)?"

Then she and another girl got drunk and my bf and his friend took them home with a taxi because they were "too drunk" to go alone. They also didn't have enough money for their drinks and my bf and his friend paid for that.

Mind you she used to write him hearts on Facebook and called him 'daddy' and that kind of stuff before we got together.