"I’m from the olden days, so I was like, ‘What does that mean?’."
The pair, who were linked romantically in 2020, first met when filming the finale of the hit show five years prior.
The 52-year-old actor lost his parents when he was young and said his “road towards relationships” has been hard — but he’s finally in “a pretty good place”.
The Mad Men actor said he was offered the role first but had to turn it down due to other filming commitments.
Slattery directed his longtime co-star and friend in the new comedy Maggie Moore(s), which also stars Tina Fey.
We're asking you who the new Batman should be.