lol..i have actually never heard the term "virtual" chemistry before..
but anyways..the first thing that came to mind was married people who start to ignore & dismiss their spouse because they have a new fascination online..
everything online is always exaggerated, & seems significantly much better than what you have when you exit cyberland..
but still..there is some attraction there between two consenting folks..
"physical" chemistry is when you see somebody who is pure eye candy to you !!
and they think the same of you..
i think physical chemistry is more associated with lust and having an infatuation with somebody the minute you lay eyes on them..
