@chubbyblue recently got a Switch…
I imagine Mulberry came in trying to seduce Bleu with her big stuffed belly in attempt to drag his attention away from his new gaming system. While he didn’t complain eating his fattened-up girlfriend, he still wanted to get back to playing his game after stowing her away in his gut. Mulberry, now happily lounging in the coziest tummy in all of Ponyville, ignores her boyfriend’s whines about messing up his game as she rubs and shakes her softened, round belly, ultimately jostling around Bleu’s in the process