It's confusing, because I don't always know how I'm feeling or know what the words are so I can only say I don't know, and then people think I'm shy or trying to hide something, or I can say it but people take it wrong or think it's not okay to feel like that. So if you mostly have that sort of experience in talking about feelings you don't have much reason to want to talk about feelings.
But anyway feelings are so personal there's no way to share to be sure you're talking about the same thing, it isn't like a bear that you can both experience together at one time and even if you could the same feelings at one time would feel different to people with different backgrounds, because feelings aren't discrete units but part of a lifelong emotional sense understood also through personality and brain differences.