Penny Fitzgerald/Relationships

Mr. Fitzgerald
In "The Date", it is revealed that Penny's father is very protective of his daughter and at first does not approve of her hanging out with Gumball. In the season two episode "The Knights", it is shown that he still does not care for Gumball, though he began accepting him at the end of the episode because of how he saved his daughter's life.

Leslie
In the episode "The Flower", the two begin to meet, making Gumball jealous. Leslie is Penny's cousin.

Gumball
Gumball and Penny are deeply in love with each other, but Penny seems to have an easier time hiding her emotion (in other words, smoother) when Gumball is around. Unfortunately, neither is capable of expressing it, even though they are both aware of the other's affection. So far, Penny has kissed Gumball on the cheek twice ; in addition, they attempted to kiss on the lips twice - once in "The Pressure", and another in "The Party". Both attempts failed as in the former, Banana Joe chopped down the treehouse that the kiss was taking place in, and in the resulting confusion, Gumball kisses Darwin on the lips in "The Pressure". In the latter, the moment was ruined by Richard honking his car horn loudly and interrupted the moment, so Gumball instead said to Penny that he loves her in "The Party", causing her to blush. In "The Date" she had invited Gumball to her pet Mr. Cuddles' funeral,but Gumball mistakes it for a date and ends up embarrassing himself and losing Mr. and Mrs. Fitzgerald 's respect for him. In the end,Gumball had found Mr.Cuddles in the bathroom,gaining back her,and her parents' respect.

In Season 2, Gumball and Penny's relationship was explored further. In "The Knights", Gumball and Tobias both compete for Mr. Fitzgerald's permission to work on a medieval times project with Penny. Near the end of the episode,Tobias and Gumball "duel" for Penny's hand, and Tobias pushes her into the road. At the last minute,Gumball pushes Penny out of the way of her father's car, saving her life, and winning his respect once again. However, Mr. Fitzgerald crashes into the The Wattersons' House, angering the family and thus reversing the situation for Mr. Fitzgerald. Again in The Flower, Gumball competes for Penny out of jealousy for Leslie. His envy personifies itself into Gumball's soul, causing him to use very drastic measures to get rid of Leslie. Concerned for Leslie's well being (and Gumball's sanity), Penny, Darwin and Leslie resort to Carrie to exorcize Jealousy. After a lengthy cycle of Jealousy traveling for person to person, Gumball was freed of the entity. Soon afterword, Jealousy takes over Penny when Carrie friendly punches Gumball in the arm.

Tobias
In the episode "The Knights", Tobias is shown to have a crush on Penny. The feeling doesn't appear to be mutual, because she only has feelings for Gumball.