(list will alter when future orders are edited in)
A listing of Spider Man comics with any Peter and Mary Jane appearances in it relevant to their iconic relationship. In chronological order might I add.
Side Note: Something that should be noted is that, contrary to something Dan Slott said a long time ago about Marvel suddenly scrapping the relationship with Black Cat to make way for the Spider Marriage.
Spider Man and the Black Cat had effectively broken up years before Annual 21 and there is a LOT of build up and development on the relationship of Peter and Mary Jane before the sudden (but welcome) decision to wed them. The issue of their break up was Spectacular Spider Man v2 100 (1984).
So it wasn't as rushed as one might think.