Glee co-stars Blake Jenner and Melissa Benoist are engaged to marry, according to a U.S. report.

The 20-year-old actor went public with the couple's romance during a Twitter.com fan chat in May (13), and now sources tell Usmagazine.com he has asked Benoist to be his wife.

Jenner and Benoist, whose characters were involved in a love triangle, are not the first to find love on the popular series - Lea Michele began dating her Glee co-star Cory Monteith last year (12).