Lena 'Devastated' Over Jack Split, Willing To 'Humiliate' Herself To Win Him Back!

Lena Dunham still has it bad for ex-boyfriend Jack Antonoff, and RadarOnline.com has learned exclusively she's been vying for him back.

"Lena's been trying to take her mind off things with writing and travel, but this breakup has been emotionally devastating for her," a source told RadarOnline.com. "It's really rocked her world, and no one-night stands and weird hookups aren't going to change that."

As RadarOnline.com readers know, Dunham, 32, and Antonoff, 34, broke up in January after five years together. Rumors at the time suggested Dunham was tired of waiting for the Bleachers front man to pop the question,  and when he continued to drag his feet, she cut him loose. But after some rebound flings, she's desperate for a reunion.

"She would prefer he run back to her, but she's totally willing to humiliate herself to get back into this relationship," the source revealed.

The Girls creator has even reportedly crept back to New York to try to get things going again.

"Jack definitely has the power in this situation and has finally moved out of the apartment they shared and into his own place, but Lena still thinks she can get him back eventually," the source stated. "As far as she's concerned they were basically common law husband and wife together, and went through the weird experience of getting very rich right at the same time."