The Twilight actress confessed to having an affair with Snow White and the Huntsman director Rupert Sanders last month, issuing a public apology to Pattinson.
However, the 26-year-old has retreated into seclusion following the confession, according to a new report in the Daily Star.
"He's started to shut himself off from the outside world, preferring to watch Antiques Roadshow and listen to music," a source told the newspaper.
This contradicts reports that claim that Pattinson was spotted at various California clubs.
The actor will make his first televised appearance since news of the affair broke on The Daily Show with Jon Stewart on Monday (August 13).