Probably at some point the developer will have a new cycle of possible events triggered by one event in particular. For example, after MC gets the Milf pregnant, maybe they move to a new house with different rooms, since they need another room for the new child(ren). As a result the older events don’t really happen the same way as before, if not completely replaced with newer ones. Like maybe she needs help getting breast milk pumped out for the baby, and asks you to help stimulate her mammaries, allowing for some hijinks on the MC’s part. But doing so might replace the exercise event in the timeline, so that switches up the formula. There’s all kinds of possibilities, dev’s just gotta get to a point he can put them in without messing everything up.