The full interview is scheduled to air on ABC’s “Good Morning America” tomorrow.
The story at the ABC News website includes an additional question from the interviewer, Robin Roberts, and the President's answer:
Roberts asked the president whether first lady Michelle Obama was involved in his decision. Obama said she was, and he talked specifically about his own faith.
"This is something that, you know, we’ve talked about over the years and she, you know, she feels the same way, she feels the same way that I do. And that is that, in the end the values that I care most deeply about and she cares most deeply about is how we treat other people and, you know, I, you know, we are both practicing Christians and obviously this position may be considered to put us at odds with the views of others but, you know, when we think about our faith, the thing at root that we think about is, not only Christ sacrificing himself on our behalf, but it’s also the Golden Rule, you know, treat others the way you would want to be treated. And I think that’s what we try to impart to our kids and that’s what motivates me as president and I figure the most consistent I can be in being true to those precepts, the better I’ll be as a as a dad and a husband and, hopefully, the better I’ll be as president.”
http://abcnews.go.com/blogs/politics/2012/05/obama-comes-out-i-think-same-sex-couples-should-be-able-to-get-married/
= new reply since forum marked as read
But I'm curious how long this was in the wings, or if it was just a last-minute decision. 
