alive - I think you are asking the million dollar question, and men just don't know the answer to it. My personal opinion is this: there is something inside of a man that gets triggered when he meets the right girl at the right time, and that trigger causes him to pursue her, become a better man for her, and want to go the distance with her and for her.
So this trigger is the chemistry between two people and cannot really be predicted. Its either there or it isn't. A man will see many many women as date-worthy, but only a few will appeal to him on that deeper level. He may be able to describe the attributes that he thinks he wants in a woman on a deeper level, but the fact is, he may meet a woman who has none of those criteria and fall head over heels for her anyway.
It is a thing that happens between two individuals and is always a unique mix and blend of attraction, chemistry, and fate.
However...this "thing" that happens, this trigger, does NOT mean it will last forever. As far as I know, there is *nothing that guarantees the spark will be there forever* and a man OR a woman may stop pursuing and trying to keep their mate....which is why then we need to rely upon partners in a marriage *learning to stay focused on the marriage* and work at it...not to let it rely on auto-pilot. This requires education.
If we just rely on the "thing" that happens between two people and makes a man want to pursue a woman for a deeper relationship...that is not enough. We already know that even when that happens, it may or may not last forever. There is no answer to "what will make a man want to pursue you forever". Basically, a man has to want to do it due to chemistry, but also he has to committ to himself to do it and keep doing it. There is no other way. There is nothing in nature that will cause him to stay on the same course for a lifetime...only his own will can do that.
