>>149817640
Well the whole episode (Bart After Dark) is basically about Belle taking Bart under her wing, showing him the ropes, building trust and rapport with him. She very clearly takes a shine to him In a way grooming him to help run La Maison Derrière.

So there's the angle of Belle giving Bart a "reward" for helping so much. Or the angle of Bart being more assertive and taking Belle as his woman. Also, he's surrounded by scantly clad dancers the whole time, it practically writes itself.