Caught feelings in a unserious relationship?

I’ve caught feelings for this guy we agreed to unserious but now I’ve caught feelings I don’t wanna end up hurt so I don’t know what to do cus I also don’t wanna loose him, my thoughts where: tell him I just wanna be friends, tell him I can’t do it anymore cus unserious is unfulfilling, or just remove him 🤷‍♀️

Would really appreciate some advice:)
Caught feelings in a unserious relationship?
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