Is it normal to feel this happy about someone that it affects your sleep?

I met this guy on the metro last month and we exchanged numbers, and ever since we started talking, I just feel inherently happy and… complete.

But I’ve also been staying up late because of it, and recently my mother and sister told me I literally laugh in my sleep,like proper giggling and uncontrollable laughter 😭

I don’t even remember the dream. Is this normal when you really like someone or am I losing it?