And if he had Jen's love ...

Following a hush-hush, super-luxe dinner date at NYC's Per Se in early September, Bradley Cooper hasn't stopped putting on the charm with newly single Jennifer Lopez.

A source tells the new Us Weekly that the Hangover star, 36, is "really trying to woo Jennifer in a big way." Shortly after Lopez, 42, and Marc Anthony announced the end of their seven-year marriage in July, "He has been after Jennifer, calling her, for ages," the source says.

"They've been talking on the phone and texting a lot," another insider confides.

And it's not always long distance love, either.  On the morning of Oct. 15, the twosome -- with Lopez looking a bit disheveled -- were spotted pulling out of Cooper's driveway at his Pacific Palisades home, and drove to Lopez's abode in Hidden Hills about 15 minutes away.

"They were laughing the whole time!" an observer says.

"Considering how depressed she has been since her breakup, it's no surprise that she has finally decided to let him in," a source close to Lopez says of the now-single mom to twins Emme and Max, 3.

"For the first time since the split, she is allowing herself to go with the flow."

For much more on Lopez and Cooper's sexy, secret new romance -- Cooper's jet-setting methods of seduction and how Lopez's pals are "questioning his intentions" -- pick up the new Us Weekly, on stands Friday.