Nathan says it means “[He is] promised to someone, there is someone in [his] life, but right now, [he’s] not really talking about it in public.” But he is thinking about settling down and moving forward with life-maybe marriage- and the time is coming he is going to leave the bachelor group.

Again, since this relationship isn’t public yet, we’re going to respect their wish for privacy and just leave it there. When there’s more public information to share, you know we’ll be all over it.

-T