once you date someone, it gets boring in the long run. at least for me, but i'm just some 14 year old friend, right?
i feel you there tho, dude.
it's always worth a shot at least talking to her, like just a normal conversation with that girl you want back, but don't open up with your feels for her right off the bat. you've gotta get up to that point where you're both like frends and you talk and stuff and she's willing to listen to you without just saying "ok" or some stupid stuff like that.
also i found it really weird she listened to the guy who told her you didn't have feelings for her instead of her own boyfriend? maybe i just read it wrong, though.