After that day when hulk saved Paola, Paola really wanted to be friends. So, after that day when they exchanged so, the could be friends because Paola asked because she couldn't let this opportunity slip out of her hands. Then after a week, Paola texted him because she kept telling Nia that she really wanted to text him so Nia kinda took the phone and texted cuz PAOLA didn't want to. Then they kept texting and became like best friends.