Mairwin

Mandy x Irwin, "Mairwin" (pronounced mare-win), as kids and teens. Irwin tries to hard to woo her to no avail...until he becomes a member of Underfist, which keeps him from spending time with Mandy. Mandy eventually realizes that she's not used to Irwin not being there to worship her and things start to change. When he takes a much-needed break from the team, Irwin can enjoy his youth with more freedom and more of Mandy, who now tolerates him enough to put her hand on his shoulder. This marks the beginning of reciprocated feelings.

Here's their daughter, Cleo, disheartened by how she can't find a single picture of her mom smiling. She holds back her own smiles for her mom, but it's exhausting, so she wants to find a photo to use to try to get her mom to be more tolerant of smiling. When Irwin notices, he gives Cleo their first family photo (the only photo of Mandy smiling). Seeing her mother actually smile raises her spirits immensely, making her to happy to pester her mom to smile. Side note: Irwin knows his blubbering from becoming parents with Mandy might annoy her and keep her from smiling, so he's stifling himself as best as he could for the photo.

This shows the dynamic between Cleo and her parents, along with her fully-grown, hybrid-monster self.