I'm gone, happy? -Phan

Phil has loved Dan since the beginning, same for Dan, but a drunken mistake at a party means a little surprise comes about 9 months later. Now Dan has commitments to make. Phil cannot take it anymore and leaves. What happens when Phil goes missing? Will Dan leave his girlfriend and the baby for someone who he's not even sure is alive? Or will there be more than a simple party mistake and kidnap involved?