1) Peter’s mother was reportedly talking about Hannah Ann with her tearful “don’t let her go … that’s what love stories are made of” speech.
As Steve noted, Peter’s focus is on Madison at that point, which may be why he looks so miserable in that discussion with his mother.
That’s why I’m wondering if that tearful speech from Barbara influenced Peter’s decision in what happened later.
Apparently Peter’s family actually takes a side on Madison vs. Hannah Ann — not all families do that in the end — and they seem to see Hannah Ann as a better match for him, per the March 9 updated spoilers.