I'm pretty sure that it's just Lea's nightmare... hopefully the teaser's teasing with us (huh)

Hopefully ABC is teasing everybody, since it is called new beginnings, I assume they will get married. I also think it will touch on the Morgan-Park relationship, Debbie leaving Glassman and Andrews's divorce.

could be a nightmare. Maybe Shes worried that it wont go well or he might say no. Idek.