I talk about romances on the internet. Using computers is a relatively new way to have an intimate relationship with someone. On the internet, they may indeed find what they are missing. A great deal of intimacy is possible simply by communicating with someone through typed text. Of course, there is also much to be learned about someone by being with them physically.
Physical presence is an important dimension of communication and intimacy.
This is why most people who fall in love on the internet eventually feel that they MUST meet the person. Physical contact is a basic human need, a basic element of human intimacy. You can't hold your lover in cyberspace. In cyberspace, most of the time all you really experience is the other person's mind, and not their physical qualities. So perhaps Platonic loves are more likely to occur.