Mutual attraction is not something I have experienced with anyone.
Do you think that there's a reason why you haven't had a mutual attraction experience with another person?
Maybe it's because I'm short and skinny and they're not interested in me.
I think your feelings are valid, but it's hard to judge if there is a mutual attraction without getting to know someone. I can understand how you could be sad if you've never had a mutual attraction. It's best to put yourself out there and get to know others.
I can't exactly put myself out there when I'm too shy to talk to people and I don't want people to laugh at me so I stay to myself.
I understand what it's like to be shy and fearful of being judged, but I think you need to make steps to put yourself out there and be more open to meeting and getting to know people. Generally, no one is judging of laughing about you, rather that's your mind sabotaging you. You are worthy of mutual attraction and I hope you overcome  your fears so you can experience it.