🚨Warning: Obviously there are MASSIVE spoilers ahead for the Season 4 finale.🚨
This week, This Is Us ended Season 4 with a jam-packed episode filled with a ton of answers, but also even more questions.

"Strangers: Part Two" showcased storylines in the past, present, and future, and it was honestly one of the best episodes this season.

In the past, Rebecca and Jack dealt with the Big Three's first birthdays, and Rebecca tried to figure out how to mourn and honor Kyle, the baby she lost.

This led to another incredible moment between Rebecca, Jack, and Dr. K, who they visited for advice — Gerald McRaney continues to be amazing in this role.

In the present, Randall and Kevin finally had an explosive fight, which is the reason they still aren't talking on their 40th birthdays.

Also, Madison learned that she is pregnant with twins and Kevin is the father.

And, Kate and Toby celebrated Jack Jr.'s first birthday and decided to adopt a baby.

Now, in the future, we saw Kevin and his children visiting a much older Rebecca with Uncle Nicky and Randall.

And, Jack Jr. and Lucy welcomed an adorable baby girl, Hope, and we saw Jack's sister, Hailey, for the first time.

Like me, the rest of the internet is freaking out over the This Is Us Season 4 finale. Here are some of the best reactions:
1.
SPOILER ALERT!!!! “She’s my sister”-Jack Damon 😭❤️😱#ThisIsUs
2.
My exact reaction when museum girl turned out to be Jack’s sister 😭 #ThisIsUs
3.
Kate gets her boy and girl dream from the time capsule! #ThisIsUs
4.
What’s her name? Me: *Don’t say Rebecca don’t say Rebecca don’t say Rebecca* Jack: Hope Me: THAT’S EVEN DEEPER #ThisIsUs
5.
THIS IS HOPE 💗🥰 #ThisIsUs
6.
The lack of Kate and Toby in the future is making me very nervous 😭 #ThisIsUs
7.
I am glad they showed Rebecca mourning for Kyle with Jack. You can never forget the child you carried for nine months and lost. 😭😭😭 #ThisIsUs
8.
Me, 9:55 PM: What could Kevin and Randall possibly say that would cause them to stop speaking for at least a year? Me, 9:56 PM: Well. Okay then. #ThisIsUs
9.
kevin n randall physically fighting each other would’ve hurt less than seeing them say all that to one another god DAMN #ThisIsUs
10.
I can’t believe Kevin and Randall said that to each other ... #ThisIsUs
11.
Character growth......thy name is Kevin Pearson. #ThisIsUs
12.
Randall and Kevin right now... I'm surprised no one threw a punch 'cause every SECOND of that argument was laced with fighting words. Every bit of that was hurtful good god #ThisIsUs
13.
This just about took me out because I can’t believe he said this #ThisIsUs
14.
Kevin has surpassed Randall in the rankings for #1 Pearson son. #ThisIsUs
15.
Dr. K just fixed my whole life. #ThisIsUs
16.
All Coronavirus press conferences should end with a speech from this man. #ThisIsUs
17.
How does Dr. K always know the right things to say😭 #ThisIsUs
18.
Me piecing together all the new information given from the finale of #ThisIsUs
19.
Thank you, #ThisIsUs for always reminding us that even in the darkest of times, there’s always hope...and blue skies ahead 🌤