What should I do about him?

There is a guy I like. He has been giving me signs for several months like staring at me or being close and he seemed really nice. But some girl thought they were gonna be together because she says he gave her all the signs one day and the day after he says he doesn't like her. That surprised me. My closest friends dont like him. I dont want to end up like the girl I mentioned should I forget him? or should I give him a try?(PLEASE HELP THANK YOU😊)
What should I do about him?
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