u/Cheap-Two-6070

Hi. I am 25m. I just have a question. Why is it three women in my life that have my brain never ending
thinking. It starts with my ex who I haven’t dated since high school. Who has already married and has a kid. Then it moves to a girl, who I only went on one date with and cut it off due to distance; but we did go to fourth base. And the girl, i have always like since we were kids and have been in an on and off relationship in high school, college, and parts after. How do I move on without going back? I just wanna turn back to all of them every day. How do I move on?