I understand completely. Loneliness isn't just about being alone. You don't have to be alone to be lonely, and you don't have to be lonely if you're alone. Big difference.

To me, being lonely is about feeling like you are alone emotionally and mentally. Feeling like no one really understands you. Feeling like you are just hiding behind a smile. After my latest break-up, that is what has happened to me. I may have people that talk to me, but I always still feel alone. I can be texting five people at once and still feel like I am alone. I don't know if that feeling will ever go away for me...

So, you aren't alone in that regard. Try to do things with one person, rather than big groups. I find that much better. It allows both of you to concentrate on each other and just is much easier than having to mingle with a bunch of people at once. Not a big fan of crowds.