Help?

I hate being attached to people so much. It’s honestly hell, I can’t even last a day without talking to a specific person, not only that but I spend my time always worrying if they find me annoying or if they never wanna speak to me ever again. I hate this so much. I can’t stop looking at my notifications or my phone because I always think they will text me. Not only that but I’m always just wanting them and no one else. I can’t stand being without them and I hate it. I cry over the smallest things to if they can’t call I get sad, if they take to long to respond I get sad, if they leave me on seen for hours or minutes I get sad, there text tone is slightly off I get sad, and I always start to over think everything, I don’t know what to do anymore about this, I don’t know what to do.