While the three stages of love are intended to be consecutive, they can also occur concurrently. When this happens, the individual can be attracted to one person, have an affair with another and be bonded to a third.

Now, the concurrent relationship works very well in areas where polygamy is both practiced and accepted.  Sister Wives is a prime example.  But, it is a disaster in most other social settings.

Unfortunately, you do not have any control over the “chemistry” stage.  But you do have control of the “erotic” stage.  Or, to put it another way, you may have chemistry with someone but you have the choice as to whether or not you act on it.