The Oscar-nominated actor is currently promoting his latest film, "Southpaw," now most famous for being one of the last scores by composer James Horner as well as having songs written by Eminem - but, of course, all questions with the "Brokeback Mountain" star are always directed to who could be Jake Gyllenhaal's new girlfriend.

While sister Maggie has settled down with husband Peter Sarsgaard and has had two children, Jake is considered something of a playboy, and past Jake Gyllenhaal girlfriends have included the likes of Oscar winner Reese Witherspoon, Kristen Dunst and most famously pop star Taylor Swift - who seemingly still comes back to haunt him.

According to Fox News, the actor recently took the guest's chair on "Good Morning America" to promote his new film, and the interview ended up going viral for reasons that had nothing to do with his acting skills: in fact, as he was introduced to the show, Jake Gyllenhaal's ex-girlfriend's most recent hit "Bad Blood" started playing in the background!

Of course, E! Online reports that one of the biggest jokesters on entertainment wouldn't miss that kind of beat, and when Gyllenhaal visited Howard Stern in the middle of his tour, the radio host asked about what he felt when the song by the woman who used to be Jake Gyllenhaal's girlfriend started playing in the background, but the actor just shrugged it off.

"First of all, I did not hear that ... When I'm doing an interview when you're up at 5 a.m. and you can't really make sense of words, you're not thinking about the background music that's playing behind you," he said, trying to put the subject of Jake Gyllenhaal's girlfriend to rest, though of course Stern said they were attempting sabotage - something Gyllenhaal just laughed off.

ABC News reports that, even more interestingly, the actor has confessed he's now ready to settle down, and he looks at his sister Maggie and brother-in-law as role mothers.

These days, it's rumored that Jake Gyllenhaal's girlfriend is his "Southpaw" co-star Rachel McAdams - could they be walking down the aisle soon?