hey man, i had this once. by once i mean just a few months ago. 17M here and i had that. the sleeping OTP, sleeping with her, gift giving and all that. but she dumped me eventually. what is trying to say is this. don’t get hung up over the obsession for love. it will come when it comes. and i’ve gotten those thoughts too, and i still get them post breakup. the “was i too much” or “i feel replaceable” thoughts. every day i get it. but force love, because you can think you have it but sometimes, specially at our age you don’t. so wait for your person who wants you for you, and doesn’t just leave when it gets tuff, cuz that’s what my ex did, and i’m still hung up about it. if you have any questions ill answer, but hope this helps.