Kate Hudson has been calling Owen Wilson , STAR reports.

Kate Hudson calling Owen Wilson

"He was frosty at first," says one insider. "He felt betrayed when she dumped him for his friend Lance. But after a while, he caved in and has been sweet to her."

Friends worry that Owen, who tried to commit suicide in 2007 after splitting from Kate the first time, will once again fall under the single mom's spell.

Adds a source, "It's not fair to Owen, because he really cares for her and ends up getting hurt."

Image WENN