John Slattery Reveals Who He Thinks Roger Sterling's Soul Mate Is On 'Watch What Happens: Live' (VIDEO)

John Slattery stopped by "Watch What Happens: Live" (Weeknights, 11 p.m. ET on Bravo) alongside Rashida Jones ("Parks & Recreation"). As is typical for a "Mad Men" cast member, he didn't offer any exciting new tidbits, but he did reveal his thoughts about his character, and in particular about the heart of Roger Sterling.

Speaking about Joan Holloway, played by Christina Hendricks, Slattery said, "I think ... they love each other. I don’t know whether they’ll ever be together, but they’re -- they’re sort of soul mates, I think."

Both characters have been on rather lonely journeys the past season or so, trapped in bad marriages. After Joan threw out her own husband, the door may well be open for Roger to take a more active role in their son's life, though that would certainly open up a whole other can of worms.

According to a "WWHL" poll, though, Joan was the runaway favorite as Roger's soulmate. That said, the poll was rather stacked in her favor, considering she was going up against Peggy and Fat Betty.

"Mad Men" airs Sundays at 10 p.m. ET on AMC. "Watch What Happens: Live" is on weeknights at 11 p.m. ET on Bravo.

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