I’m really sorry, but don’t be sad. I mean, it is natural to be sad, and I would be sad too, but if he fucked you over then he is literally not worth a single minute of your time, nor worth a single thought of yours. In situations like this, you have to become completely objective and impartial and step out of yourself to see the situation outside of your own subjectivity—he is an exploitative douchebag who used you, and you could not possibly love someone who would do something like that to you, because the very nature of love would mean you can’t like someone who would do that. What I mean is, we tend to say we love people who do terrible things to us, or we get sad over losing such people and think we lost someone perfect, someone irreplaceable. We cry over lost boyfriends, girlfriends, crushes, people with whom we are infatuated because we think they are more or less everything we ever wanted, and that we can’t do better. But the point is, if someone does fuck you over, then by definition, that person can’t be perfect for you, and can’t fit your own personal standard. If you put yourself down and say that you lost someone who you loved, and this is the same person who fucked you over, then you are lowering your own standards, and let me tell you something, no boy or girl is ever worth lowering yourself. If the person fucks you over, then you keep your standards where they are and objectively realize and come to terms with the fact that if the person was on your level, at your standard, on par with you, then he/she would never have messed up in the first place.

Not sure if this is coherent, but yeah