Not sure it counts as a Shotgun wedding. They're both obviously excited and happy about it, so it might just be a rushed wedding.
Although I realize the origin of the term comes from the scenario of a man being forced at gunpoint to marry a girl he got pregnant (usually by her father), I thought nowadays the term generally referred to any rushed wedding due to a pregnancy.
Onawah!!Ahmagah!!Howaah!?*nod*I'm......pregnant.At a Loss for WordsHuh? Are you for real?Howaah!?