Can't stop checking my phone for her texts?

Yes, it's a terrible condition, I know, especially since my feelings were unrequited. I've tried everything from deleting her number to turning my phone off and only using it when I need to, but even then I get a gurgling, unpleasant feeling in my stomach when I turn it on. Then I get sad and the feeling lingers. I hate it. Can someone help me out here? I can be the busiest guy in the world with no thought of her, but when it comes to use my phone, it ruins my whole day since, of course, there's never anything from her.
Can't stop checking my phone for her texts?
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