How fleetingly these moods morph one into the next - in my own life, as in yours. (toddler fluff - can be imagined with either 'Harry & Sirius' (HP) or 'Peter & Tony' (MCU)
harry potter - black gets cheated on by his girlfriend Ginny at his second ever high-school party coincidentally just when his dad rethinks his position in his life, harry reminds his dad that Sirius' pup will always need him (modern au harry & sirius FLUFF)