Credit: Kevin Winter/Getty Images; Jon Kopaloff/FilmMagic

Saturday Night Live's Jason Sudeikis is finally ready to open up about why he broke Jennifer Aniston's heart -- sort of.

In the October issue of Vanity Fair, the comedian -- who first costarred with Aniston in The Bounty Hunter earlier this year -- reveals why things didn't click romantically with the 41-year-old actress.

"I don't know, I don't know. Bad manners maybe?" Sudeikis, 34, muses. "You know the worst part? Even joking about it gets taken out of context. It's such a weird thing to even speak about. I make what I think is clearly a joke and then some people...I don't know, it's hard. I guess it just proves that not everybody has the same sense of humor as I do. I try not to be too worried about it."

The actor then jokes about the nature of his relationship with Aniston -- and current squeeze January Jones -- by telling the mag that "I completely pay attention when I'm sleeping with someone. It's one of the things I'm known for. I'm always super focused on it -- knowing their name, knowing if something's working. You will never hear otherwise."

Kidding aside, both Sudeikis and Aniston have clearly moved on: the two recently finished shooting Horrible Bosses (scheduled for release next year), in which Aniston plays a sexually aggressive dentist who blackmails a coworker (Charlie Day) to get him to sleep with her.

One thing the actor won't dish on: Aniston's rumored nude scenes in the film.

"There must be some nudity, but I don't know who it is. I guess we'll all find out at the Cannes premiere. I know who everybody's hoping it is," he says. "All I can tell you is that I won't be naked. It's in my nudity riders. I'm only allowed to show the middle of my dick."

And these days, Sudeikis only has eyes for one girl: Mad Men's Jones, who he escorted to the AMC Emmy Awards after party last Sunday.

"We're dating. She’s great," he says. "I'm very happy with everything."