Olivia Wilde and Harry Styles were seen holding hands ... "They were in Montecito, California this weekend for a wedding," a source tells PEOPLE. "They were affectionate around their friends ...

And at first, he was even talking about marrying her,” the source explains. The insider adds that, while Olivia was all in ...

Olivia Wilde is finally moving on from Harry Styles ... is "totally smitten" with Diliegro, a source recently spilled to a news publication. "This is the first guy she’s really fallen for ...