Lupita Nyong’o shared a heartfelt tribute to her Black Panther co-star Chadwick Boseman Tuesday (Sep. 8) following his death at 43 years old after a private battle with colon cancer.

Taking to Instagram, the 37-year-old actress shared a photo of the late actor laughing as she put her hands on his shoulders.

Alongside the photo, Lupita penned a touching message about her friend, saying she was struggling to think about him “in the past tense.”

She wrote: “I write these words from a place of hopelessness, to honor a man who had great hope. I am struggling to think and speak about my friend, Chadwick Boseman, in the past tense. It doesn’t make sense.

“The news of his passing is a punch to my gut every morning. I am aware that we are all mortal, but you come across some people in life that possess an immortal energy, that seems like they have existed before, that are exactly where they are supposed to always be – here! … that seem ageless… Chadwick was one of those people.

“Chadwick was a man who made the most of his time, and somehow also managed to take his time. I didn’t know him for long, but he had a profound effect on me in the time that I did.

“When we came together to make Black Panther, I remember being struck by his quiet, powerful presence. He had no airs about him, but there was a higher frequency that he seems to operate from.

“You got the sense that he was fully present and also somehow fully aware of things in the distant future. As a result, I noticed that Chadwick never seemed rushed! He commanded his time with ease… And he put in the work with all of us. He showed up to every rehearsal and training and shoot day with his game face on. He was absorbent. Agile.

“He set the bar high by working with a generosity of spirit, creating an ego-free environment by sheer example, and he always had a warm gaze and a strong embrace to share. His large hands would descend on my shoulders and give them a squeeze that relieved me of the tensions I did not realize I was holding.

“Chadwick’s hands were strong enough to carry the weight of the film and free enough to clasp mine when I needed it. He was impeccable with his word. I never heard him complain—and there were definitely some things word complaining about! I think he understood the power of words and chose to manifest power through his word.

“He used his mouth to build, to edify, never to break. And he used it to tell some regrettably lame dad jokes. He practiced not going against himself. He seemed to really love himself; he expressed who he really was, even when it meant he didn’t smile when you thought he should. He accepted himself. And perhaps that’s why he was capable of loving so many, so deeply.

“And he used his body in every way he could. He did his own stunts, drummed at his own parties, danced many a night away, mastered martial arts… the list goes on. He loved, honored and respected that body, doing more with it than most. In so doing, he took the risk to be alive, fully alive. So it seems that it was life that gave up on Chadwick long before Chadwick gave up on life…

“When I was around Chadwick, I wanted to be better, less petty, more purposeful… He was fueled by love, not fear. He moved quietly, deliberately and without imposing himself or his ideals on others. And yet he also made damn sure that his life meant something. He was unwavering about that.

“He cared so deeply about humanity, about Black people, about his people. He activated our pride. By pushing through and working with such high purpose in the films he chose to commit to, Chadwick has made the infinite his home.

“We are all charged by his work as a result, by his presence in our lives. His power lives on and will reverberate for generations to come. He used his life force to tell meaningful stories. And now we tell his…

“Chadwick’s death is something that I can neither take in on nor take in my stride right now. Perhaps with time… I’m going to take my time… and in his honor, I promise not to waste my time. I hope you will do the same.

“My deepest condolences to his family, friends and to his loving wife, Simone, from whom I heard this phrase articulated so resonantly: #TakeYourTimeButDontWasteYourTime”

Lupita captioned the post: “For the beloved #ChadwickBoseman. #TakeYourTimeButDontWasteYourTime”

Lupita’s tribute comes after she joined fellow Black Panther co-stars Michael B. Jordan and Winston Duke at a private memorial service in Malibu for Boseman’s friends and family.

The late actor’s wife, Taylor Simone Ledward, also attended the service. She and Chadwick were said to have secretly married earlier this year after he proposed to her last fall.

Chadwick Boseman’s death following a private 4-year battle with colon cancer was announced on his social media accounts during the late-night hours of Friday, August 28th. “He died in his home, with his wife and family by his side,” the message read in part.

According to Boseman’s obituary, he will be laid to rest after a private funeral service “for family only” in his hometown of Anderson, South Carolina.

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