I have never felt heard particularly
This is your moment! The only person who needs to hear you is you. These are your feelings. This is your life. You are in charge. You are responsible for your feelings. Take care of them as if they were your own child. Because they are. They are little you, from your childhood. Your unheard child self is doing things like sulking (depression), running away (anxiety), tantrums (uncontrollable anger) etc. Look after the emotions. If your gut is saying 'GET AWAY!!!' then all you need to do to stop being the child is to translate that into adult language. But always understand the message, and, as if the emotions were a child, listen, in the way that you would like to have been listened to as a child.
And this is how you get round the 'I rely on my partner for emotional support' thing, too. Currently, you are not supporting yourself, so you feel you need that help. You are not self reliant, and have to look outside yourself. But once you start to listen to that inner voice and respect it... well, that's the definition of self respect.
Can you put into words what your gut instinct is actually telling you? When I tried to do this, I had to go out and buy a red pen because it was really angry, but it was very good to get it all out, even only onto a piece of paper that nobody but me ever saw.