Yes. It's every 5 affection you should get the next set of events. I don't think anyone ever takes more than 30 or 35 affection to get all their events as of this version.So in order to get these to happen is the best method to just increase affection? Is it every 5 or 10 points?
If you want specifics for every event and are tired of asking, cckerberos made an event guide with all the requirements for all the events. Can just click the name in the quoted post below to jump to it:
I've updated my event guide to 0.10.0 Part 2