On Wednesday, US President Barack Obama came out in favour of same-sex marriage. David Quinn and Brian 
Sheehan of GLEN the Gay and Lesbian Equality Network) discussed the subject on the Scott Williams show on Q102 on Thursday evening.
You can listen to the discussion here [1].
In addition, here are two worthwhile pieces briefly setting out why it is essential that society continues to give special recognition to sexually complementary relationships and why it would be harmful to redefine marriage in such a way as to signal to society that sexual complementarity is of no special importance.
The first [2]is by co-authored by Robert P George. The second [3] is co-authored by Ryan T Anderson.