The BFF memories should get ones like that with or without this mod installed. They are generated in my game. I have 'Made 2 BFFs', 'Made 3 BFFs' (I think), 'Made 5 BFFs' and 'Made ten BBFs'. I don't know if it counts higher than that yet.
All 'Made a BFF' memories share the same game file. The numbered memories however are from different files.
:-x Not in my game! I do have a mod for the first love/mysterie sim-memory and the one for puppylove, could this change that? Because when I look at the memories of my sims, there are a lot pages with 'made first BFF' (stupid yellow pages) but not one icon says 'made .. BFF's' :O