Hey, welcome to the board! I am sorry to hear about your H's behavior, but this is a great place with many lovely, wise people full of good advice. Don't worry about your grammar, it is perfect plus your vocab is very strong, you know the word "scrumptious"!!
I would also recommend posting in newcomers, it is one of the most active parts of the board and I think you would get more attention.
I don't have much experience dealing with an OP, so I don't feel like I have much advice to give, except that it helps A LOT to take your focus off the OP's behavior. You cannot control the OP. So worrying about what they do is not going to help. You can control yourself though!!! An attitude that helps is to tell yourself, "The OP's got nothing on me" -- there's nothing about them that's better than what I have to share.
Many people have a crisis in their late 20s. There are different ways to look at it--some people call it an early midlife crisis, others think of it as a quarter life crisis. If you're into astrology, the astrological term for it is "saturn returns". So you are not alone, and neither is your H
I noticed that after you were cheerful on the phone you had more positive responses from H. This is great! More of what works!!!
Overall, please, don't despair. Even if it your H is insisting 100 percent that there will never be a second chance, that doesn't mean that you won't get one in the end. What you need to do now is focus on taking care of yourself and making yourself happy and living a beautiful, fun and fulfilling life. It can seem impossible when your entire world is falling apart, but you can do it!
plus your vocab is very strong, you know the word "scrumptious"!!