I really need your help and advice.... not doing so well atm.... a breakup..

My boyfriend of 6 months broke up with my 3 days ago.

His reason?

I don't party or drink. Uhmmm sorry that I'm a nursing major and don't want to lose my nursing licence. I'm a CNA.

I'm 18

He was crying so much in the car. Why would he cry while breaking up with me so much??

He kept on looking at me and breaking down.

I deleted him off of Facebook... Idk how to feel about my decision. .. I feel mean. Was that mean on me...?