Being blocked by someone can be hurtful for several reasons:
1. *Rejection*: It can feel like a form of rejection, which can be painful.
2. *Loss of connection*: You may feel like you're losing a connection with someone who was once important to you.
3. *Uncertainty*: Not knowing why you were blocked can be frustrating and leave you wondering what you did wrong.
4. *Respect and validation*: Being blocked can make you feel like your thoughts, feelings, and presence aren't valued or respected.
Remember that your feelings are valid, and it's okay to acknowledge and process them.