Skip function only works if the content being skipped is flagged as seen in the archive file, which is deleted with a wipe. The other option is to enable "Skip unseen text" feature in the options menu, but if the OP can't remember exactly where he left off with each girl, then that can pose an issue as well. I'm personally going back through the entire game atm, reading every single line of dialogue, but that's only because I want to see the changes made to earlier content.