"He doesn't particularly want to do this, but he knows Lauren really wants to and he's at a point where he feels like he ought to just do it and make her happy. "She's gone and taken his last name already, even though they're only engaged. Simon is very happy about that and says he's totally committed to her and thinks it's great she has his name." While sources said he doesn't want to deal with a wedding fuss, he's too take-charge to keep his mitts off. "Most guys with that attitude would just be hands off and let the excited bride plan it, but not Simon," said the source.