Sometimes I worry that no one will ever love me romantically.
Why are you so pessimistic about your love life?
Because I'm worthless and the only reason someone would like me is because they pity me.
This pessimism about yourself isn't good. Try to develop a more positive attitude about yourself.
Everyone thinks that I'm extremely ugly and disgusting looking.
It can be easy to get down on yourself, but remember that other people don't see you as you see yourself. Most people focus on their flaws, but other people will see the good qualities in you, so try not to be so pessimistic. You'll find someone out there that likes you for who you are.