history: I didn't get the promotion I was going for, even though my boss said it was virtually guaranteed.  I went through three different interviews over two months. I didn't get the promotion I wanted_comma_ even though my boss said it was virtually guaranteed. Oh no!  Did he give you a reason why?
current: Nope!  I think he's avoiding me.  I went through three different interviews over two months and he was positive about it the whole time.
next: That's terrible.  Have you said something to HR about this?