Didn’t know that Tattle has this thread so I’m gonna ask away

(thank you for starting the thread, btw!)
I have difficulty in expressing what I think, and mostly what I feel. If I face a certain social complexities against someone else, I usually either get mad at them or to remain completely silent and refuse to talk to them for a few days until I can calm myself down and be rational.
lastly the thing that makes me infuriated the most is because the only role play friend that I have refused to continue our role play session using characters from certain tv shows/anime. I understand because he doesn’t like to write stories and reading them, he’s more of a visual type of person (prefers to see pictures, go to the museum more than reading a book). Though I understand the reason behind it, the thing that makes me disappointed is because when he decided to stop doing role play, is the same as the character’s life being taken away from me, as if they never existed. We’ve been doing role play on and off for 10 years and it felt surreal we are never going to have any role play session again.
I want to tell the person that I am mad and hurt, and that role play is a form of therapy for me (because I like to write and read) but I know I can’t push my hobbies to someone else. I know I’ll never have any role play session again with this person, but somehow it irks me to just sit still and not let them understand my POV (though I secretly wish that if they understood my POV perhaps they’ll continue role playing with me)
This kind of confusion from my end doesn’t only entail this one specific case, I also have difficulty in standing up for myself in a conflict. I try to understand their POV, but at the same time I want them to also know my POV without sounding like I’m pushing them around too much. By the end of the day I mostly just keep silent and let this anger inside me dissolved in a few days.