Yeah, in my limited experience I think ENTP/ENFP is made for a bit of tension. I mean, I feel like I have a little ENTP inside of me, and god knows I experience a lot of personal tension. (This was a joke, btw.)
And two attention whore types but with one's T and another's F constantly chasing each other around and never meeting eye to eye to understand one another -- doesn't make for a lot of harmony.
Plus, I was and am WAAAAAYYY better at being an attention whore than she was.