Tori, Cat and Spongebob Friendship

The trio have a fairly healthy friendship with each other, which isn't surprising considering that Spongebob was very sweet and friendly towards them from the start and never judged them despite being a different species from him. After all, this is the same Sponge that's best friends with a squirrel, a land creature, so of course he'll be friends with anybody despite if they're the same species from him or not.

It's always a thrill whenever the girls come to visit him to hang out with him when they have the free time to. He always allows them to stay at his place as long as they please as long as it doesn't turn into another Squidward situation where one time he was freeloading off of Spongebob while letting him stay at his place after becoming temporarily jobless, but since Tori and Cat are really nice girls, have their own lives, and genuinely love being friends with him, they both know that they would never happen nor would the girls would do something like that.

He always asks questions about their human species, what they do, how they sleep, how they eat and stuff like that the curious sponge wants to know about them because there are some things that he doesn't always understand their kind but tries not to overstep as much.

He also doesn't mind paying for them, like when if one of them wants something like jewerly from the mall, he will buy it for them, or like when they want something to eat down at the Krusty Krab every time they visit, he'll pay for that too. Tori tells him that he doesn't have to do that for them but he tells them he insists and doesn't mind. However, once they started making their own money at Bikini Bottom, they tell him he doesn't have to pay for them and he understood.

He also does his best to help them with whatever problem they have and even trying to give them advice if they need or ask for it, same with the girls, although they might not always understand whatever situation that Spongebob might be having, they do the best they can to help him with it.

Whenever the girls need support, Spongebob doesn't hesitate to be that one supportive friend who tells them that they can do something even though they feel less confident about something and they always thank him for it and how they are grateful for having a great friend like him.