From Dr. Taku on RelationshipSurgery.com:
This article is for those who can’t really seem to get it down that something is very off about their relationship…
Are you losing yourself to an odd, and ultimately destructive, relationship? Do you find your old friends falling away, while family members remark on how you don’t seem like yourself? Before you can regain your individuality and strength, you’ll need to determine whether the relationship is taking something away, and, if so, you must put an end to the destructive cycle.
And here’s how.
Step 1. Evaluate Honesty [sic?]: Is this relationship healthy, or is it unhealthy? Try to be objective as you analyze how things have changed since this relationship began.
Step 2. Ask yourself if you’re in an abusive relationship. Now the following questions are simply Yes or No. There is no in between with these questions.
Does your partner… (Continue reading the questions Dr. Taku asks and the 11 steps he advises for evaluating your situation, and his sage advice here.)