Noah Cyrus is going through an emotional time. The actress was forced to say goodbye to her beloved horse, Constantine, which she calls the "worst night of my life." In a heartbreaking message on Instagram, Noah explained that she had to put him down because he developed a tumor, and she wanted to save him future pain.

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last night was the worst night of my life…i had to choose life or death for my Constantine. We thought he was starting to colic and we made the decision to take him to surgery…in surgery they found a tumor thats been growing for months…to try and to take it out wouldve put con through too much pain… last night was my last night with my little boy…. Con thank you for the past few years, youve made me the person i am today. to know you was to love you… we never were able to exchange words but, we could ways read each others mind. you and i had a long journey and youve been there with me through the best of times, worst of times, happiness, and heartache. i know youll be watching over me and i hope you felt me with you last night. i was petting you the entire time.. you were sleeping peacefully when we made the decision. i couldnt let you live in pain… for those who have never been through something like this… putting one of your animals down is the worst thing you can go through and i hope none of you will ever have to feel the way i feel in this moment. — Con, one last thing…. please never forget that i love you with all of my heart and YOU are and always will be my best friend wether youre in heaven or on earth. i will NEVER forget you. Please say hello to my grandfathers who are there with you and tell them all see you all soon with open arms. i promise this goodbye isnt permanent. I love you. rest in peace my angel. 7/5/16

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She's been sharing emotional photos of her beloved horse, and fans are also sharing their own memories and supportive messages.

Our thoughts are with Noah and her family. We know how close she was to Constantine.

Send your kind words to Noah in the comments.

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