Is it normal to feel like this?

Hi, me (22M) been thinking about why do I always have to be obsessed with something to feel like my life has some meaning. I'm pretty geek and into tech and statistics and almost all the time I have to be working or studying and I follow a strict routine, but whenever someone gets into my life that someone immediately becomes my everything; I could fall for someone in 2 weeks and when it comes down to letting go it takes me years.

My productivity skyrockets I feel like someone finally cares about me and this person occupies my thoughts a lot, no matter if I'm reading in English, Spanish or scripting some bash code and my entire life just get more colorful for some reason.

My entire logic turns off around this person and I stop being rational about them, I thank God for allowing me to find such person, I write on. My dairy about them and I begin to plan my entire life around them, I don't even care about my dreams or career anymore as long as they're with me, because after so many years of suffering and mistakes I just realized all I ever wanted was real love and nothing else.

You know what's the worst?

That I have to hide my true feelings because I'm scared they might get scared off and leave me.