Do we hear wedding bells already?? Though the duo only just went public with their romance in July, Ben Affleck and Lindsay Shookus are already planning to tie the knot! A source close to the Hollywood pair exclusively reveals to In Touch that this couple is getting more and more serious as the time goes on!

“They are already talking marriage,” the insider says. It’s clear these lovebirds are totally infatuated with one another, even though both Ben and Lindsay are still legally wed to the respective estranged spouses. According to the source, Ben has known the Saturday Night Live producer for many years even though they “only officially got together recently.”

ben affleck jennifer garner

(Photo Credit: Getty Images)

And yet Ben, 45, is already transfixed by the happy-go-lucky blonde beauty, 37. They’ve even talked about having kids. “Ben knows Lindsay’s the one,” adds the insider. “They plan to tie the knot as soon as their divorces are finalized.”

This relationship isn’t completely smooth sailing, though. Ben, who shares kids Violet, 11, Seraphina, 8, and Samuel, 5, with his ex, has yet to reveal his relationship news to his fam. The three kids “don’t know he’s in a relationship,” says the source. “They just think he has met a ‘special friend.’”

Besides not sharing the news of how serious his relationship with his kids, the father-of-three has also not informed his ex, Jennifer Garner. “Ben hasn’t told Jen about wanting to marry Lindsay either, as she’d likely freak out and tell him it’s too soon,” the insider adds.

Ben is probably wise for not sharing the news with Jen, as In Touch recently revealed that she’s adamant about keeping Lindsay away from her three children. “Ben really wants to introduce Lindsay to his kids, but Jen has put her foot down,” a source said.  “It’s taken the whole family a long time to adjust to the divorce. Bringing Lindsay into the picture could be very jarring.”

For more on this story, pick up the latest issue of In Touch, on newsstands now!