Looking for a gal!

Looking for a gal! is the twentieth Trouble Center mission in Paper Mario: The Thousand-Year Door, initiated by Goom Goom. It is first available after clearing Chapter 5.

Mission
Mario must travel to Keelhaul Key, make his way to a storeroom in Pirate's Grotto, and talk to Goom Goom with Goombella present. Goom Goom proclaims his love for Goombella and present her with Couple's Cake, only for Goombella to declare that she is going out with Mario. Assuming that Mario is Goombella's boyfriend, Goom Goom gives up the cake before leaving. Goombella picks up the cake, which she gives to Mario as a reward for solving Goom Goom's trouble.

In-game description

 * "I'm pretty happy living out here on Keelhaul Key, but there's one thing I miss! I need a girlfriend! Please come listen to my request! I'm in the storeroom deep in the cave on Keelhaul Key."