The rise of technology means that what was once perceived as minute feelings of insecurities are now amplified as we get cautious and suspicious of every person that comments on our loved one's walls, or tweet mentions, or whatsapp messages, or IMs.
The greater question is, however, does this lead to more trusts, and in time, to the benefit of mankind? After all, companies already google prospective employees to research and verify their background. What more lovers and their loved ones?