Very, very interesting. You are asking about something that is perhaps a matter that is more personal and intimate than political or a matter of public philosophy (or philosophy about public life), but I offer these thoughts with some hesitation about responding to what is probably quite personal. In the West, historically (from the Medieval period on) marriage has been principally been understood as that which is established (and constituted) by two persons So, while there has been a massive tradition of arranged marriages and marriage has often been understood in terms of the transfer of property over generations in the west, at the heart of the very idea of marriage is that it involves a commitment between a man and a woman (or, as we should say today, between two persons). The role of the church and state has (from an historical point of view) been conceived of as RECOGNIZING marriage --rather than establishing marriage or constituting it. So, while in Eastern Christianity, the church is understood to ESTABLISH a marriage, in the west (the inheritors of Latin-speaking Europe, i.e. most of Europe except Greece, Russian and countries where Eastern Orthodoxy is prominent), in the WEST (historically) your marriage with your partner is between the two of you as individuals (or whether you as individuals consent to being a couple). So, in a sense, if he and you are committed to a life-long love with each other, you are (from a western point of view) ALREADY MARRIED. The state and politics only come in to recognize this, to celebrate this and protect the union.
Read another response by Charles Taliaferro
Should love between a man and woman be diminished in any way by differing political viewpoints? My boyfriend and I both think politics is a minor part of life that neither of us gets directly involved in but when we do speak about it he isn't afraid to philosophize about his radical political views. As it follows, he is opposed to marriage including straight marriage and especially gay marriage because he does not accept the legitimacy of any state or institution. I don't mind spending the rest of our lives together unmarried because this in no way negatively impacts my life even though my political views are rather different. I disagree with his stance on gay marriage because I have gay friends but this does not diminish my love since we are both straight, so do political views matter when it comes to love?