Some people might get flattered by either jealousy, possessiveness, or constant attention. A lot of the time, these are signs of dating abuse. Put together, these qualities can be the result of control more than love. Of 920 students that were questioned, more than one-third of them had been abused, emotionally and physically, by their romantic partners before they started college. This type of abuse has been known to influence people into doing horrible things such as committing suicide, binge drinking, and committing acts of violence. This is an issue that seems so small but can eventually cause very serious problems.
http://www.netfamilynews.org/2009_02_01_archive.html