If this is not the relationship you want, and if you are tired of dating a 7 year old, what are the steps you are willing to take to make a change? Have you been to an Alanon meeting? If so, did you try six meetings before deciding if it's for you? If not, I suggest doing just that. The only risk is that your life may improve.
I can't believe you actually want to live the rest of your life as you described above.
Cyranoak