SUBREDDIT: r/relationships
TITLE: I [27m] broke up with my ex [27m] of 2 years. I mulled it over for months, yet it's still killing me.
POST: I wasn't so sure I wanted to be with my ex anymore. We dated for 2 years and eventually I had to break it off.  We were both at a busy time in our lives and I feel like the relationship wasn't getting the time it deserved and I had to end it.  Even though I comtemplated the break up for a few months before actually pulling the plug, it still hurts me 2+ months later.  

If I was the one that broke up, why is it still killing me inside?  How can I over come this? I feel bad enough putting him in this position, but hell, he's probably going to be over it faster than me, at this rate.
TL;DR: 
Broke up with an ex of 2 years since it wasn't working out, yet I still like complete crap almost three months later.