I know what you mean here...and it's funny, I was going to post something right after I finish this post along the same thing-dating after being in a horribly dysfunctional marriage.
Here is my .2 cents...good boy or bad boy...if there is no spark and you are forcingyourself to like this guy...then it probably will only be a good friend, if that. I have tried to play logic with myself before ("he's such a nice guy", " he has everything right about him"), but if there isn't a connection-you just can't force it or fake it. In the long run, you may resent him and your decision because he will never turn out to be what you want him to be.