Good night then a bad one

This f-ing roller coaster just keeps on going!!!  Last night I felt really good but tonight, no.  I couldn't get her off of my mind tonight and I don't know why.
maybe because it was Saturday I knew she was off tonight and figured she may have been with him. So what if she was? There's not a damn thing I can do about it and I should no longer care so why am I still feeling like this?
i need to let her go so I can move on and maybe that'll happen after I file Monday. Maybe that will help clear my mind. Some of the songs on the radio weren't helping anything.. The last worthless evening.. Break up to make up... Why do I put myself thru this? 
Maybe meeting S on Friday will help me find a release to where I can let K go and put her out of my head. Love really sucks sometimes. It shouldn't but it just does.