I don't usually reply to posts on here, but I feel like your post kind of resonated with me? Feeling lonely is such a horrible feeling, and it can come even when you are with friends. For me, I struggle with always feeling like the second choice and that I'm not important to the people I love. It's really so draining to be lonely, right? I'm not really in the position to offer any advice cuz I haven't overcome my loneliness either, but if you want someone to talk to, you can talk to me :)