Robert Pattinson jealous of Giovanni Agnelli as Kristen Stewart moves into producer's home
The actor, 26, is suspicious of why Giovanni Agnelli - who produced Kristen's 2010 film Welcome To The Rileys - is allowing her to live with him.
'Rob knows Agnelli and has been calling him a lot since Kristen has been there,' claims an insider.
'He wants to know why Kristen is staying there at his house. He is super angry now.'
Giovanni came out in support of Kristen, 22, after she confessed to cheating on Robert with married director Rupert Sanders, Tweeting: 'I'll
say right now what the manipulative media isn't saying... Kristen
Stewart did not have any type of sex with Rupert Sanders.'
But it seems unlikely that Rob's fears that Kristen could be having a second affair are true - friends of the actress say she 'doesn't want to communicate with anyone' after 'blowing' her relationship with her Twilight co-star.
'Kristen hasn't showered or changed or washed her hair in several days,' an insider tells Radar Online.
'She is laying around in her T-shirt and shorts and eating ice cream. She really wants to believe that she can win back Rob, but I think deep down she knows that isn't the case.'