February 10 has been the date Bones producers have pointed to as the "tipping point" for Booth and Hannah. This sneak preview from tonight's episode may indicate why.

During a night out with Sweets, and no doubt influenced by a remark his young psychiatrist pal makes, Booth makes a surprising decision about his relationship.

Guess this would be the two proposals we've been hearing about ...

Of course, whether these proposals actually happen, or result in marriages even if they do, are different matters entirely. Especially given the uncertainty of Hannah's future and the potential departure of Carla Gallo (Daisy), who's starring in a new CW pilot.

Check out three more sneak preview clips from the episode below, including a pair featuring a hung over Booth, who might be regretting more than just that ninth tequila shot:

Steve Marsi is the Managing Editor of TV Fanatic. Follow him on Google+ or email him here.