How do you get over a guy you've stopped talking to for a little over 3 months?

Time. You will feel the same about someone too. You'll meet someone, spend a little time and realize the attraction isn't there. There wasn't a long relationship... you just had expectations because YOU felt a strong attraction. Expectations, whether in a relationship, or with school, business, friends, jobs, etc., can lead to disappointment. Expectations are almost like a wish... there is no guarantee a wish will come true, just like there is no guarantee expectations come to fruition. Best to not have expectations (easier said than done, I know!), and just enjoy the moments as the come... or not. Time... you will get over him.