But it might not be as smooth sailing on the other side of that illicit tongue sandwich after his wife, Liberty Ross, was spotted out in London with a mystery man at her side.
Ever since Kristen and Rupert made their public apologies, it's all been very quiet as to what's happening between the four involved. But with rumours that Rob and Kristen have moved back in together, we've been left wondering what's going on with Rupert and Liberty.
Spotted at the same London Fashion Week party as Harry Styles last night, Liberty was noticeably without husband Rupert and instead had another escort, who she was seen lauging and joking with.
Moving on to the Groucho club for some drinks, the pair were reportedly spotted leaving hand in hand as they got a cab together. Presumably she left Rupert at home - someone's got to look after the kids, or so we'd imagine anyway.
Way over on the other side of the Atlantic, Rob has apparently forgiven Kristen enough to move back in with her in LA. It's probably about time as we're guessing a couple of months bathing in bin juice was enough even for R-Patz.
"They pretty much decided they couldn't live without each other," a source told the Sun.
But what do you think? Can you see Rob and Kristen getting back together? What do you think about Liberty and her new pal?
Comments below please!