And rather than the tame PR-led treatment we might have expected him to opt for, R-Pattz has proved he's a good sport by appearing on comedy-chat programme The Daily Show in the US.
The Twilight star, 26, seemed a bit nervous as he began his chat with host Jon Stewart, who cheekily asked him: "So, what have you been up to?"
Rob replied: "I thought we'd already prepared this. I had a joke prepared. I was all set up and ready to go. Now it's meaningless."
At which point Stewart reached down and produced two tubs of ice cream, saying: "We're just a couple of gals talking. Tell me everything."
And R-Pattz said: "I'm trying not to eat this as I'm going to split my Spanx. I'm double Spanxed."
Stewart then pressed: "So what are we doing here? I'm worried about you. Are you alright?"
To which R-Pattz confessed: "I literally don't know how to approach this now.
"This is the weird things about these interviews, and now I'm going to sound like an idiot, but my biggest problem in my life is that I'm cheap.
"I didn't hire a publicist and every awkward interview, most actors have things scripted. I'm going to hire a publicist."
Host Stewart then offered Rob some advice, telling him: "Boy, you are better off without. Kick her to the curb.
"When you are young and you break-up, it feels like the world is ending but this is the first time I have actually seen the world react that way. It's insanity.
"So here is my wish for you, that you get to handle your business in your personal life and I wish you all the best."
Watch MTV News on the hour every hour on MTV - Sky Channel 126 and Virgin Channel 134