Although I love my family I can't help but feel sorry for the bride and groom, that day should have been entirely about them. My opinion is that it's unacceptable regardless and why did he have to pick that one day? Why couldn't he have picked a different place to do it and let the bride and groom have their special day. I don't understand how any bride could be okay with it. Plus the fact that my two cousins always try to out do each other and have both previously been engaged; again the timing was funny and seemed to be due to rivalry. I'd have been so angry if someone did it on my wedding day. 

What are your thoughts? Is it okay to propose at someone else's wedding?