I think this song is about an old love of his getting married, hence the "work out the reception seating". He is jealous of the person she is marrying, and perhaps feels that she is marrying him because he has a money, unlike Jesse who is a "poor musician". Perhaps the man is a doctor which would explain the medical references. She is pregnant with a child and he wishes that she'd name the child after him so that he still feels like he is part of her life. He also imagines that his thinking of her and vice versa will cause them to remember their love and cause them to "fall back in love again" but he knows that now it'd be disastrous to her marriage and her future so they need to "take cover".
I think this song is about an old love of his getting married, hence the "work out the reception seating". He is jealous of the person she is marrying, and perhaps feels that she is marrying him because he has a money, unlike Jesse who is a "poor musician". Perhaps the man is a doctor which would explain the medical references. She is pregnant with a child and he wishes that she'd name the child after him so that he still feels like he is part of her life. He also imagines that his thinking of her and vice versa will cause them to remember their love and cause them to "fall back in love again" but he knows that now it'd be disastrous to her marriage and her future so they need to "take cover".
Just my $0.02