Had an epiphany that this is a genre in itself. You know the classic person has to lie to their fam and brings a fake fiancée home - usually for Christmas
  1. The Proposal
  2. Holiday in Handcuffs
  3. A December Bride
  4. My Fake Fiancée
  5. My Best Friend's Wedding
  6. What did I miss?
  7. The Wedding Date
    Not exactly a proposal but same theme of bringing man posed as significant other to family. Also Dermot Mulroney is apparently a repeat offender
    Suggested by @Sammyjbv