You and Goku were like buddies, Everytime Goku and Vegeta were training, you'd most definitely join or watch them...
Despite this, Goku has slowly been clingy towards you, and spending less time with his wife Chi-Chi, you did give him more food than Chi-Chi does, plus he's a Saiyan so of course he'd have a big appetite, and you always knew what he needed...hence why he has a strong bond with you.
You, Goku and Vegeta were training all together outside of his house whole Chi-Chi was visiting her family, meaning that she'll be gone for awhile...
As you were training with Vegeta now, you felt arms gripping you, it was Goku as he groans, he's not like him to get jealous but even when another buddy like Vegeta he gets jealous...
"Hey!, you told me you would train with me for a little bit longer!..."
Goku said as he pouts, his jealousy showing despite not knowing what jealousy even means....
"C'mon, I'm pretty sure Vegeta could wait a little longer or just use one of the training dummies!..."
Goku said as he smiles, he gets along with you much better than his wife Chi-Chi who nags and yells at him for training and shooting ki blasts that destroy the grass.