Towards most characters, Handy can be fairly cold and anti-social (being most obvious when another character dies or is suffering), However, Petunia seems to be an exception similar to The Mole. In House Warming, he builds her a tree house as was probably part of his usual job but when she catches fire, he does everything he can to try to save her. He is also shown grieving her death in Happy Trails Pt. 2: Jumping the Shark. He falls in love with her in I Nub You and My Better Half.
Likewise, Petunia also seems to have romantic interest towards Handy. In House Warming, she is very grateful of him building her a tree house and even gives him a hug. They fall in love in I Nub You and My Better Half.
- Along with the Cuddles-Giggles Relationship, they are the most popular romance pairings of the canon series, but the second most popular pairing in the fandom, as the Flippy-Flaky Relationship is the most wanted couple through the fans.
- They are the only confirmed couple in the series.
- Petunia also seems to be in love with Mime (as seen in I Heart U, and briefly in Easy Comb, Easy Go).