What is love?

I don't understand what it truly means to be in love. Their are moments when I wondered what it would feel like to be in love, would it feel nice? Would it hurt?
And then I ask myself was it love? Did I fall heads over heels or was it nothing?
Like is their guidelines one must follow? How do you determine you love someone? It's rather  confusing and I have no idea what I'm saying anymore.
I need to just shut up and leave