In the post on
Astropost: Laura Bush's Accident at age 17 : the match between Laura and George Bush...It is a mutual Sun/Moon midpoint synastry that makes you 'feel close'. His Sun/Moon is in aspect with her Venus (he is motivated by her love) and her Sun/Moon is in aspect with his Sun.
The Sun/Moon = his Sun connection is not unusual with couples. I think that it might mean that he is impersonating the family man in her eyes. The feeling of 'belonging together' ....It is a strong connection that is able to withstand many challenges.