Don’t push out the others.
You spend all your time with one person because hey make you happy. Because that one person makes you feel happier than when you was with the others.
But the when that person completely fuck you over and leaves you broken and sad and ready to take your own life you realise quite quickly that you have no one.
You stop getting invites to get togethers. People get snappy with you. Your seat at the dinner table gets replaced. And you soon realise how alone you are.