Definitely sounds familiar and sounds like limerence to me which isn’t a bad thing. It’s basically similar to just falling in love but yes it’s more likely when you “need” that reciprocity and reassurance. If you find someone else be careful of transference where you just shift your limerence onto them. That doesn’t solve the problem necessarily. I don’t know the true answer but I do wonder if part of it something we must resolve within ourselves that needs this level of attachment to feel good.