Re: my bestie fiance isn't exactly ...
i know youve already spoken to her but maybe you couldve just said 'keep on eye on that other girl i think shes interested in your fiance'
that way ure just making her aware of something that might happen in the future, and the smallest thing will get her thinking as to maybe something is up
even now you can talk to her, dont say sorry.. just say that its your life i wont mention anything about the other girl again and i like for us to stay friends and at the end just caution her to be aware of the other girls interactions herself because you dont want for anything to happen that would hurt her
and then do what red velvet suggested take her to where the guy probably is and let her see dont say anything just act surprised that hes there