Bradley Cooper and Irina Shayk have ''discussed'' starting a family.

The 'American Sniper' star and the Russian model, who started dating in May shortly after his split from long-term girlfriend Suki Waterhouse, are ''growing very, very close'' and are already talking about settling down.

A source close to the couple said: ''They couldn't be happier with how their relationship is progressing. Things are really heating up and they are growing very, very close while getting to know each other. Everyone that is close to the couple really thinks this is it for the two of them.

''They both want kids one day and that's been discussed between them. They have a huge attraction to each other between their personalities and their sexual energies. You see them in a room and you immediately are in love with them as a couple.''

The 40-year-old actor and the brunette beauty, 29, recently sparked rumours of a split, as they hadn't been photographed together in a few weeks, but are still spending as much time as they can together while Bradley is starring in 'The Elephant Man' in London's West End.

The insider told E! News: ''They just work really well and want to spend every minute they have free together. Both families love seeing them so happy.''