“Why does this all seem so impossible? Why do two people spend time apart when they know they’r asdfadsf ”

Most of people are simply too off-balance from draining relationships to have the confident, happy, centered life you need to be giving without over-giving, and to focus on what's important. Tell the people who say they love you how you want to be loved, and if they won't be giving to you, seek new people. They are out there if you look - and be one yourself! :)