Los Angeles: 'Hangover' star Bradley Cooper, who is reportedly dating pop diva Jennifer Lopez these days, has reportedly been pursuing her for a long time.

The duo, who have been spotted together on several occasions, have made no comments about the ongoing rumours, but sources claim Cooper has been trying to woo Lopez for sometime, reported Us magazine.

"He is really trying to woo Jennifer in a big way. He has been after Jennifer, calling her, for ages. They've been talking on the phone and texting a lot," a source said.

Lopez, 42, split from husband Marc Anthony after being together for seven years and was linked to Cooper shortly after their divorce announcement.

"Considering how depressed she has been since her breakup, it's no surprise that she has finally decided to let him in. For the first time since the split, she is allowing herself to go with the flow," the source added.