You are heartbroken. You should cry loudly when you are heartbroken. You won’t be sad anymore after that. It’s good to just let it all out. You can use this relationship without a good ending, to clear some things up. It’s a type of gain, I guess… Being sad is a good thing. Please, don’t tell yourself everytime that you must be strong, don’t cry or don’t be sad. Let me tell you, after a period of time, it will pass. You will forget about crying and being sad. You will be ready for the next love.