Romance between committed actor and hot actress left crew members shoc

Well, this hot actress seems to be having quite a roving eye. Her alliances have been talked about in the industry for some months now. It seems the actress dived into an affair with the hero of her upcoming film, who is in a committed relationship. It is her first project with this actor. Crew members have been talking about the roaring affair between the two. It seems their chemistry will wow audiences as they were very much 'in love' during the shoot. Talking of the young hero, it seems he is not as committed as he is made out to be. Gossip about his alleged womanizing ways have been discussed quite openly in filmy parties. It seems he was having a good time with another actress some time back as well much to his partner's annoyance. Can you guess who are the actor and the actress?