The Amazing Spider-Man 2 co-stars Andrew Garfield and Emma Stone, who are rumoured to be dating, have admitted that they have sexted.During an appearance on the The Ellen DeGeneres Show to promote the film, the pair, along with another cast member Jamie Foxx, agreed that they all have sent sexy messages to somebody some time, ABC News reported.Foxx also played his part well by joking about the couple, saying: "What do you guys do? I mean do you guys stay in separate rooms or ... I've been wanting to know this for a while. I've been wanting to know what do you guys do? I ain't trying to get in your business. I just wanna know what y'all do."Garfield tried to handle the query smartly by saying: "Here's the thing, you know the answer to that because we've been sharing the same bedroom."To that, DeGenres said: "Oh, it's you two. I see,'' adding, ''You're the couple that everybody talks about."She even commented on their "great chemistry".Stone brushed it off, laughed and steered the conversation towards the movie.