How can an INTJ with social anxiety disorder balance seeking validation from others while also overcoming vulnerability to their opinions?

I have a relative who has many relationships. These men are made part of the holidays where I am forced to socialize with them. There are children involved so I dont want to miss out. How do I navigate this awkward situation?
Do you believe that you can feel the love of your life even if you haven’t met them before? Can someone share their unbelievable love story that almost feels like a fairytale? I’m starting to stop believing in love.