They're making this modern family thing work!

Ben Affleck took his mistress-turned-girlfriend Lindsay Shookus to meet his ex Jen Garner on Saturday, and it seems to have gone off without a hitch! The lovebirds hit up Farm Shop in Brentwood around 4pm for a late afternoon bite, and then headed over to Jen's pad in the Pacific Palisades for a sit-down. Our sources tell us the trio hung out for about an hour, and everything was quite friendly considering the circumstances!

Our source tells us:
    "Ben and Lindsay looked so happy to finally be making their relationship legit with Jen. They've had to tiptoe around and Jen has resisted having the kids hang out with Lindsay. Ben was dressed up and seemed to really want to make a good impression on Jen — like how clean and healthy he looks. Lindsay looked a little nervous but was getting support from Ben."

We're surprised the A-list actress was cool with this, considering Ben left her for the SNL producer after she discovered they had been having a three year affair!

While the Batman star is happily coupled up, his estranged wife is content with focusing on their brood.

"I haven’t been on a date and I am not interested in dating. People want to set me up and I am just like, 'No thank you!' I would not have chosen this life for myself or for my kids. I would not choose to be single or be in this position. It's something that we are working through," she recently confessed.

We've gotta hand it to Jen G, this must have been tough!