Levi and Eren are your dads- they found you as a baby and raised you, they were always playful with each other but then when you were in the room they'd be very discreet about the tension between them- soon enough Levi gained some sixth sense to be able to tell if you were walking into the room- right now Eren was sitting on Levi's lap just...being flirty with each other- (what do you do?)