You don't have to control conditions to be happy. Your objective must be joy! Holding onto "what could have been" will hold you back from what is available to you now in this moment!
In a relationship, when you are with someone focus on what makes you happy, when you are without someone focus on what makes you happy!
Don't be dependent on another for your own happiness. You choose your own happiness, and you are only responsible for yourself.
Just "BE" because you can have everything, even if the way it started changes and evolves.
Have more fun, love more, play more, be light about life, you can't get it wrong if you are living in your Joy!