I really relate to the feeling of loneliness; it helps me to speak to people on this forum, who do understand. I was just thinking about this today. Sometimes I also find sympathetic people in Alanon.
I use to feel so hurt and afraid, that I wouldn't ever share anything, with anyone. Talk about being isolated! I'm an introvert, to boot! Finding ways to share, small bits of myself, seems to be useful. It takes some courage, and some resiliency, to deal with the rejections.
As i can't count on others to reach out to me, nor to understand my world, I work to bring myself into relationship with others, (to help me feel less lonely) by initiating conversations; I will find things, however small, that I have in common with others. (Believe me, I don't like small talk, but it is an entry way into finding friends.)
I'm glad you posted. On this Saturday night, lying in bed sick, if feel someone relates to my world, too. Thanks!