Justin Timberlake, Jessica Biel are engaged, reports say

Justin Timberlake and Jessica Biel are engaged, several reports say, but the two are not commenting about it.

Timberlake, 30, popped the question to Biel, 29, during a recent trip to Montana, People magazine said on Thursday, January 5. Us Weekly reported that the event occurred in "the mountains of Jackson, Wyoming" in late December.

Timberlake, a pop singer whose acting career took off after the 2010 film "The Social Network," and Biel, who rose to fame with the series "7th Heaven," have never been married before.

The two have been dating on and off for more than four years. Their most recent breakup was confirmed in March 2011. They reunited months later and were seen and photographed together at several Los Angeles parties and promotional events in the fall.