The 4th aliyah in Parshas Tzav discusses Moshe gathering all of the Jewish People before the Ohel Moed (tent of meeting) to appoint Aharon as Kohen Gadol. This space was not large enough for everyone to fit, but there was a nes that there was enough room for all. This concept of many fitting into space for few comes up in various places pertaining to the mishkan. This is because when it comes to the Ribbono Shel Olam there are no limitations and no boundaries. This concept of not having boundaries applies to our interpersonal relationships - specifically in marriage as well. As long as we are looking out for someone else there is always enough room.