@RealBarbie hey dear, sorry about how you feel, I know the feeling, I've found myself in the same situation and here's what worked for me..
I decided to see more beauty in me than ever, I made myself looked better always, I didn't feel pity for me nor anyone, I told myself that a closed door does not mean a closed destiny; ( you deserve better ) you're so special so its not you who lost him, he lost you.