I call bullsh*t. Bill would love nothing more than to be as far away as possible from Hillary. He's hanging in there to pay off his debt to Hillary for all the crap she had to endure on his behalf. Not that I feel an ounce of pity for either one of course, but it's obvious they only put up with each other for political gain.
The Bill angle is so they can “Write away from the lead.” AKA “Bury the lead on purpose.”
It would be too much to run a “Hillary As A Dyke” story, but by centering it on Bill’s reaction, you can also get in the details that really matter, Huma, etc.
The only shred of possible truth would be he would say this in order not to be humiliated by Hillary dumping him for a woman, not because he actually wants to be with Hillary.