By Rita Kokshanian
Updated Mar 23, 2016 @ 12:00 pm

Brie Larson is feeling sentimental. The Oscar-winning actress if finally wrapping up her 28-week-long press trip for Room, and it's a bittersweet moment. Over the course of the past two years she spent working on the film, from filming to promoting, Larson and her co-star, Jacob Tremblay, have formed quite the tight bond.

The actress took to Instagram to share a sweet message for her on-screen son, and it's tugging at our heartstrings. "28 weeks ago(according to Instagram) @roomthemovie premiered at the #telluridefilmfestival. After the screening @jacobtremblay and I toasted. He had chocolate milk and I had red wine. I remember feeling so vulnerable after sharing this movie with the world for the first time; unsure of what was to come. Last night marked what may be our final toast to this film . He had a soda and I had sake. We are in Japan," she wrote, alongside a photo of her and Tremblay clinking glasses.

"Together we have traveled the globe, spent almost two years hanging out, playfully arguing about things like who can hold their breath longer and talking at length about Room. At its core, every step of the way has been taken with love. We were generous and patient with each other. We laughed a lot, especially when it was hard. We picked each other up, answered for the other when one was tired and always kept silliness alive. Thank you Room for bringing us together. Thank you Room for uniting us with the rest of the world. Thank you to everyone who shared this journey with us. I will never ever forget it."