Im stuck being around someone I love who doesn't love me back

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Heres the situation. Im a college student I attend a military academy. I grew very close with someone we started as friends but eventually I developed romantic feelings and started to love them. We were intimate with eachother. It was a pretty typical friend's to situationship kinda deal tbh. I confessed my feelings several times each time to a no again typical situationship stuff. So since we are in college summer break was coming since i still wanted to attempt to have a friendship with them and to try to get over my feelings I had said we won't speak again till at the very least the end of summer (which is about now lol). They have made it very clear they have no romatic feelings for me and likley never will. Ive spent all summer trying to get over them and view them only as a friend but its clear thats notnhappening. Now the part that I want advice with is that since we are both in the same unit and share social circles and we will share them for the near future I am stuck being around them. From my personal experience and everything I've read online I know the best option at this point would be to block them, never speak to them, and work to move on from them. But that is not an option in my case because of the military academy nonsense. Whenever I would spend time with my friend groups from school over summer and they'd mention them I'd still get that disgusting feeling you get when you think about someone you love that doesn't love you back. I reached out to them recently to see how I feel about it as I am literally going to have to see them in a few days and I still feel the exact same and it still eats me alive. So I would appreciate some advice.