Is it normal that i think about my best friend every day, every hour?

I love her. Her smile, her hair, her laugh, her personality.

We started talking in my senior year of high school. She's so great.. she likes videogames like me. She's really nice. We both have the majority of our intrests alike.

I haven't talked to her since my graduation in June last year, and we just recently came back into contact in September through an online source.

She used to reply to my messages quickly and tells me about her senior year. We both flirt sometimes and say the other one's cute.

Starting in the beginning of March she stopped sending me messages. She doesnt reply much and I send her messages asking if shes ok. She says yeah but... I feel so hurt

She was my best friend. It hurts so much and I feel so alone. I dont wanna message her again if she hasnt replied to my last 2, (she just recently replied to a very old message I sent her 2 weeks ago) I dont want her to think im obssesive.

I stare at her contact number daily. I even type messages saying how I miss her but dont send them. I I think about her constantly. Sometimes I think about driving back to our high school just to see her face again. My best friend left me.. i dont have much friends.. I dont even like meeting new people, and she was very special to me.

Am I obssesed?