Husband wants a divorce after 5 years together, says he's bored.

This is a throwaway.

Hi, I'm 28M, and I'm really struggling right now and could use some advice or just a place to vent. My husband, 36M, and I have been together for 5 years, married for 3. Out of nowhere, he told me he wants a divorce. His reason? He's "bored" with me.

He said he wants to go out, sleep around, and party at clubs all night. He even said I'm not worthy of him and that I'll never be happy without him. He claims he loves and adores me but can't stay in the marriage.

I'm completely blindsided. I've started packing and am moving in with my sister until I can find my own place. I honestly can't believe this is happening. Has anyone else experienced something similar? How did you cope? Any advice would be appreciated. I'm feeling lost and heartbroken.

tl;dr: Husband of 5 years wants a divorce because he's bored and wants to sleep around. Feeling lost and heartbroken, seeking advice on how to cope.