Robsten is definitely back ON!

Following recent reports that Rob Pattinson has forgiven Kristen Stewart for cheating on him with her Snow White and the Huntsman director Rupert Sanders, the on-again couple lunched together Monday at Mexican cantina, Casita del Campo!

The Twilight lovers enjoyed a casual lunch in Silverlake (one of their favorite low-key LA neighborhoods) with a couple friends. Kristen wore cut-off jean shorts, with the top button undone, a white tank and her signature baseball cap. Rob sported a Germs concert T at the hidden hotspot where we're told the couple crunched on chips and salsa and sat, unnoticed, in a back booth. A source inside the restaurant tells us:

    "Kristen was in a great mood and she and Rob were acting like nothing had ever happened. They looked just like the couple we've always known -- it's like they had never even broken up. They were so cute together."

This isn't the couple's only recent outing together ... the pair enjoyed a romantic, al fresco dinner at L.A's Chateau Marmont hotel on Saturday night, where they were apparently cozy and whispering closely with each other. Then last night, the pair and a group of ten friends spent nearly four hours grabbing drinks at Los Feliz bar Ye Rustic Inn.

R-Patz and K-Stew are set to make their first red carpet appearance promoting The Twilight Saga: Breaking Dawn Part 2 later this month, and although many skeptics think their reunion is for the sake of the film, we definitely think these weekend outings prove the renewed relationship is the real deal!