[speby]

Lust may be the wrong word here. Infatuation is more like the term I tend to associate with people's initial attraction and substance of their relationship with someone else. The simple reason has more to do with the fact people simply CANNOT truly know each other, their values, and the result of their behaviors and choices, until enough time passes.

It is also worth mentioning that people's lives arc on their own, in that they change. Preferences change. Values might even shift for some people over time (e.g. a religious person becoming totally secular or even atheistic later in life). And those changes also do not typically emerge in a couple of months of dating and flirting with one another.

It's.... just human nature.