Whenever I've been talking to a woman for a while and I get comfortable with her, I start becoming manipulative without even realizing it. This usually makes her really interested for a day or two, and then to her feeling hurt and mislead, which then leads to an unhealthy relationship.

Having to constantly monitor myself for manipulative comments are the last thing I want to do. How do I stop doing this subconsciously, or at least make it less obvious?