So you tried to be vulnerable in some way, whether it was telling someone how you felt, or asking for what you wanted or needed, or sharing about yourself in a way that felt like “too much,” or otherwise extending an invitation to someone to join you in being a little more human together. And for whatever reason, in some way, it didn’t go as well as you’d hoped. And maybe right now, you feel some combination of disappointed, sad, hurt, invalidated, anxious, hopeless, worthless, angry, frustrated, and/or other feelings you didn't sign up for.
I used to be awful at receiving critical feedback or anything I perceived as rejection. I was so bad at it that it led me to quit things I otherwise enjoyed. I went to musical theater camp as a middle schooler and got turned down for big parts for two summers, so I quit. As a dance team member in high school, I had to hear about how I could improve on a regular basis, so I quit. The pattern pervaded pretty much all aspects of my life for years.