Jeremy Renner & Janet Montgomery: New Couple Alert?

Jeremy Renner has been casually seeing 25-year-old British actress Janet Montgomery.

Sources exclusively tell JustJared.com that they met on a plane from Vancouver to Los Angeles – she was shooting the Fox action drama Human Target and he was filming Mission Impossible: Ghost Protocol alongside Tom Cruise. They recently met up together in Berlin and were spotted together in L.A.’s Runyon Canyon earlier this week.

The 40-year-old Oscar-nominated actor has had a great amount of success lately. Jeremy will star in the new Bourne movie and will play film icon Steve McQueen in a new biopic.

SPOILER: In the upcoming superhero flick Thor, Jeremy makes a cameo appearance as the sharp-shooting Hawkeye. Both Chris Hemsworth, who plays the title character, and Jeremy will reprise their roles in The Avengers, due out in 2012.