What does it feel like to be desired?

I'm a 23yo guy. I'm bigger, probably average in appearance, never been on a date, never had a girlfriend, and never even really had many close friends. I just want to know what it's like to be desired. What does it feel like? How happy does it make you? It sucks living a life looking in through the window. I guess I'm just an observer. I can only imagine what it feels like for people to desire you, to find you important, to care about you.