Is this normal?? Crushes

I’ve had a crush on someone since January 2018 I haven’t spoken or seen this person since spring. I still think about this person daily. Like literally all the time. Like I’ll think about meeting this person again. Is this unhealthy or normal? I have never really had a crush before so I’m not really sure if this is normal or not? It would make sense I saw this person daily but I don’t. Did you go through this or am I just obsessing?

How do you act when you have s crush?