Happy birthday to the best bestie/roomie/#1 I could ask for Isaiah Santos!!! You're aces in my book!!!!!!!!!

Just watched Isaiah Santos knock it out of the park, again!

RANDY IS A BOSS. But Isaiah Santos is the true boss! Proud of my brother!

My friend. It's nice to hear YOUR story and YOUR music. Sending love to you.

The moment you think you're writing love songs, and then realize the opposite.

Sai, so proud of you, my friend!!

My friend Isaiah Santos is about to do some real shit. And I couldn't be happier or prouder of you! GO SAI GO!

😮😮😮😮😮😮

Sai, you did amazing with this. I am so proud of you my friend!

10 minutes... IG Live ‼️ I want as many of you in there as possible!

SAI! Giving us what we NEED in this cover aren't you?!?!?!?!!?

Miss you fellas like crazy! What a time this was to be alive with you!!!

Seeing Isaiah Santos today and I couldn't be happier about it.

With my bestie! Yessssssss. So excited to hang out these next few days!!!!

Why are people attacking Montero? I don't like that. One bit. And if I find out any of you follow me I will block you immediately. Fan or not.

We celebrated while I was in town, but wanted to wish Isaiah Santos, the bestest of besties, a super happy birthday!!!!

“I’m Not Sure” is out on Friday! I am so excited for this song to be the next representation of #BestWorstYear. Like all the songs on the album, it’s very personal. Video premieres at 5am PST, 8am EST and 1pm GMT. Join me for a TikTok livestream on Saturday (time TBA)!

My friend just put out his new single and it is amazing. Do not miss out on it! Plus, he's Grammy-nominated!

A warrior!