Nick & Jessica's Split: Who's Responsible?

Tell us what you think about the couple's recent separation

After months of rumors of marital discord, Nick Lachey, 32, and Jessica Simpson, 25, announced their split the day before Thanksgiving. Jessica spent the holiday with her family in Texas before returning home to L.A. Lachey got back to work, signing on to a new WB sitcom about a newlywed baseball star. Tell us: Who do you think is more responsible for the couple's separation?