A Bridegroom presupposes two things. First, a person in a single capacity; and as so considered, he is a suitor. Secondly, a person in a married estate; and as so considered, he is a head or husband. In both these respects Christ may be considered, and is held forth in the word of God.
The gap in Genesis is one of those subjects over which many believers will split. Yet, it is the only explanation for several supposed contradictions.