Hey, don't be sad.
Whatever happens, happens for the good. Who knows, maybe something better is waiting for you, everyone says this, right?
Look, think of it as a wake-up call for you, maybe you were too naive to get fooled or have trusted someone blindly which needs to be changed. Trust people but after a certain level of purity. What has happened already can not be undone but you can shape what's coming ahead of you so work on that with the lesson you got.
To minimize your sadness, hangout with friends, travel somewhere far from your place and take a break. Things get much easier when we start to prioritize ourselves. So move on, take care of yourself, may the next weekend brings smile on your face.
Thanks, so glad for your concern