Darling, I think sometimes the fit is wrong. It's not you. it's not him. Sometimes we love people and they love us, but it doesn't work. It's sad and dreadful, but it happens every single day, and it doesn't mean there's anything wrong with you, Adrian. It just means the shoe size is wrong.
All you can do? Is make it positive. From here on out, make it positive. Try not to cry at him or let him know you're hurt. Be brilliant and shining and glittering. Cultivate relationships. Let people tell you that you're wonderful. Believe it. And see what comes of it all. You're just as good as the competition. Don't ever forget that. Live. Nothing makes a man as jealous as seeing what he's lost happy. And make your time around him good. Make it so good? That he realizes he misses you when you're not around.