I am so grateful for all your responses and support, thank you all so much. I'm trying really hard to gain insight into my own behavior and what has happened. I looked into co-dependency on the internet and found that I could answer Yes to about 65% of the questions asked, so maybe that is something to look into.
I am not really depressed right now. I have a problem in that I am bi-polar, but it has been well under control for several years now due to a wonderful doctor who monitors my meds and condition responsibly. But it does mean there are probably underlying issues in my life.
My conflict now is, if I am co-dependent, I will have to find a way to align that with my Christian beliefs, which are strong. I have been a Christian for many, many years. I know that Jesus told us to forgive 70 times 7. Love your enemy. If a friend asks for a shirt, give him your coat. Turn the other cheek. If someone asks you to walk a mile, walk two.
I have tried to live by these concepts to the best of my ability, and have never considered before that what I am doing might be some kind of mental illness? This will require some deep thinking to resolve. I am going to see if I can find a Christian psychologist in my area that might help me.