I know it may not be much of a comfort, but know that there are others who have been down the same road. A person who thinks they can fall in love/be in love in two weeks over the internet is a person I would say has very little idea of what love really is. Especially if this is happening over and over again. if you are like me at all, you are now questioning whether he ever really loved you or not.It has taken m,e the last six months to basically accept that my W's own issues prevent her from feeling a true, deep love. Her love is forever superficial and transient.
For myself, I know I deserve more so my choices are to let go and find the person i deserve or to let go and hope that W finds the help she needs to be able to love truly and deeply. The fact that we have kids makes that choice harder but the first step is the same either way.
Stand up for what is right, even if you are standing alone.