Someone once told me that the first thing an abuser will do is to isolate their target. At first, this can seem flattering (wanting you to check in with them, controlling the amount of time spent with family and friends) as this illiminates the target's support network. Then the real fun begins. Every little problem becomes the "fault" of the target. That strong protective person becomes controlling and shows a quick temper. One someone show's jealousy, it does not really have anything to do with love. There are a lot of times when we realize too late that some protectors become our tormentors. Just some things to watch out for.