<human>: Condense the text into a few key points

I met this girl after going through a really tough time in my life where I lost somebody very close to me.  We talked for several months and eventually started dating.  Those were unquestionably the happiest three years of my life.  We had even started getting into long term plans like living together and marriage.  It might have been stupid, but I would have literally done anything for this girl.  I probably would still. Then one summer we found it hard to see each other and a few small arguments about missing each other started coming into play.  After that it was all downhill.

I don't know if it was the lack of contact or that she was a Christian and we had reached an intimate phase, but for around five months she kept saying she needed to explore other options or just think about our relationship for a bit.  It always came to that after a few weeks she would come back though.  I was probably a fool for playing that game.

Eventually, she said we shouldn't talk for a month, and she was going to try and date this other guy.  I crossed the days off my calendar, and when the day came I called her up.  She decided to call it quits on me, and after another few weeks of thought, she decided that she didn't want to talk to me ever again (that was senior year of high school).

Despite being some of the most exciting years of my life, they've also been the most mournful and regretful.  I cried in there for a long time, and had plenty of relationships afterwards.  None really seemed to hit that itch in my heart.  So now I'm going into my Junior year of college and I still think about her every night before I go to sleep.  I think I'm stuck.  Or maybe it was just she was so much part of my development.  I don't know... but I'm getting tired of this feeling that keeps coming back.
<bot>: Dated a girl for three years. Three years later, I still think about her every day and it hurts like hell.  What should I do?  Anybody been in these shoes?