I have a teenage moment that's burned into my memory
How did that teenage moment burn into your memories?
The day my ex-girlfriend and I met I said something cute and all I got in return was a smile and a hand gesture to be quiet. That made me really pissed off!
Some things are best left in the past. Feeling bad about the time your girlfriend dissed you and dismissed you is a memory that you need to let go of. If you don't let go of the past, it will bring you nothing but pain.
I don't think you understand what I'm saying. I want to get back together.
I think you need to move on.  The past is the past.  There are many other women you could meet!