The Brief: Feels means "feelings."

DEEP DIVE
Common usages include the phrases all the feels and right in the feels.
It was such a cathartic session! I am so proud of the feels we captured!!! Thank you Both! https://t.co/kAS4BHTYiK
— ADAM LAMBERT (@adamlambert) February 21, 2019
Beth & Randallโs first meeting, THE FEELS #thisisus pic.twitter.com/e1DfR1c4oz
— this is us (@Thisispearson) February 20, 2019
Rewatching banana fish just for the feels be like pic.twitter.com/MIhhdHpohR
— Lona๐๐ shitpost (@sass_lona) February 15, 2019