Loneliness and Selfsteem
We have all read happy stories where 2 or more people spend a lot of time together, have fun, do many activities we find fun and entertaining and such, and Im pretty sure most, if not many, have said something like "Wish I could do stuff like that".
Me, for example, I feel like I want someone to tell me they're glad they met me, someone to laugh with me, do all kinds of fun stuff together, whether it's as a couple or simply friends. I feel lonely and different because no one seems to like what I like around here.
Accepting One Self
I once saw a video by a Voice Actor who explained why sometimes "we feel lonely even when sorrounded by a lot of people". She said the main problem is being able to accept ourselves for who we really are, we are insecure of who we are or simply don't like the way we do things. We're not conformed with ourselves.
Because of this, many are missing those who are close to them just because they're hoping a super fantastic friend will just fall from the sky and do whatever they want. We need to take action and recognize we aren't exactly alone.
The People Around You
I feel lonely, like im really missing someone in my life who will make pretty much each day worth living. The problem is: There are already people like that in my life, I just don't realize at all.
We can't just wish for the perfect couple or friend or whatever, we have to give a shot to change and chances, maybe try new things or simply learn about them through talks and such with those around you. We have to do an effort for what we're looking for, accomodate to other people's tastes every once in a while.
Conclusion
Those who are feeling lonely: You are not. Even if you feel like you are all by yourself there must be at least 1 person who you can relate, count on, who you can trust. If you really don't believe there's anyone like that, you should try leaving your comfort zone step-by-step and go find them, just wishing and hoping won't get you anywhere if you don't take part in making it come true.