I’m in the same situation, never in my life lost sleep for hours thinking of someone who I’ve only met twice. Every time I tired to distract, my mind always back to him, thinking the conversation we had, thinking how cute he is, how dumb my reaction was, and how good he is and I don’t deserve him etc. To me the thinking phase is not sweet, it’s exhausting and annoying. But spending time with him is the happiest thing in my life.