
I spot them chatting and thought they are so cool and so lovely.  I walked 50 meters away and kept thinking that I should ask them for a shot.  It's difficult to ask a stranger and even more difficult to provide a good reason why I want to take their photo.  And here I went back to ask and just said that 'I think you both look very lovely together.  I just want to take your picture. not much really! is it okay?'.