I've mentioned this often, but back when I wrote inmates, one of the most important things they taught me was that Christians are seen as the victims of choice in the outside world.
After all, being receptive, trying to help, and believing in someone at all cost (knowing God can change them and believing we'll see that in our lifetime,) is baked right into the Christine culture.
While I certainly don't believe in spreading paranoia (after all, the Bible tells us not to fear,) I do think that as Christians, we have to be aware that we are susceptible to others trying to take advantage of us -- even, and sometimes especially, by other Christians.
You can see how some people become emotionally hooked on "ministry." There's a certain high in feeling like you've helped someone, especially "in the name of the Lord" -- after all, God built us this way.
And you can see how people who have been through rejection and feel rejection easily -- whether at work, from their families, in church, etc. -- can get a huge emotional hit from coming to a place where they are anonymous and can believing they are "ministering" to others, when no one in real life will listen to them.
And it can be especially addicting to think you are "helping" people of the opposite gender.
After all, you're just doing what God made you to do (acting as a leader if you're man; being a help and encouragement if you're a woman,) right?
Right?
Sometimes I think the line between "helping" -- and developing toxic levels of co-dependency -- is about as wide as a string of dental floss.