How to stop feeling so depressed whenever she stops talking for a period of time?

This girl im talking to I like but she doesn’t feel the same way. She’s being nice and decent human and not using me or anything. But we started out sleeping on FaceTime like everyday for almost a week. Text each other good morning every day. Literally my favorite person to talk to female wise but even very chose to favorite all together. But past week we weren’t talking as much for 2 days and she might as well not text me because it was very short texts after 5-6 hours on delivered. I’ve tried so much to get her off my mind but if anyone brings her up she’s there for a while. She lives in a completely different state too we met through a mutual friend. Like now I like her but not as much anymore. Just trying to find girls close by not to move on but just to see what’s out there. But of course when I do that she starts wanting to talk a lot again. Is there a way to talk to her a lot but lose feelings?
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by the way usually I’m able to move on like no issue but if they are a clingy person it’s hard asf because they’re the only person I’ve talked to and I cut off almost every female crush
How to stop feeling so depressed whenever she stops talking for a period of time?
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