How do I completely move on?

I don't understand quite why. But I've dated 5 total girls. 2 of them I'm completely over and don't care about. One I dated for 5 years, and we've been apart for 2 years, and she's even married, and I will sometimes think about her and our time together.
Another girl I only dated for 3 months, but we had such a wonderful connection. But she wasn't ready to get into a relationship and pushed me out of her life. Her I still think too much about, now a year later.
A girl I just stopped seeing, hurts more, cause it's recent. But she lied to me and manipulated my feelings and things went bad.
How do I move in and stop worrying about any of them?
How do I completely move on?
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