Surely, me well enough to know that I am not picking on you. It is just my provocative and straightforward nature to ask the tough questions.
I do not see you as some one who fears being on her own. And you do seem like someone who is willing to confront situations that are not to your liking. So it suprises me that you are going along in this marriage which is not to your liking. And yes, not every day is peaches and cream in a marriage, but more often than not you are unhappy. (My estimating is that you have 4 hours and 22 minutes good followed by 37 bad days.)
Quote: my fear is that while living my life and making myself happy there is the possibility (that since h doesn't really participate in much with me) that someone might catch my eye, or mind, or heart...then what??
That statement sums it up very well. Then what? Which is why I ask you the questions that I ask. In all honesty, that sounds like a statement my ex could have made and obviously did make at least to herself.