Jillian Harris apparently draws the line at British teenage boy band members.

The 32-year-old former fifth-season The Bachelorette star turned down One Direction singer Harry Styles, who is 18-years-old, when he asked for her phone number after the pair had bumped into each other in Los Angeles earlier this month, Us Weekly reported Friday.

"I was super flattered!" Harris told Us of Styles' gutsy move.

While Harris wasn't interested in dating the just-legal British pop star, she reportedly handled the rejection with care.

"Jillian feels awful [that news of the incident has circulated]," a source added. "He's adorable, but 18 is a bit too young for her."

Styles apparently has a thing for older women, as the performer has reportedly previously been linked to 32-year-old British television personality Caroline Flack.