The bride - groom - best man love triangle is very similar to the Alec - Leslie - Kevin one.
Yes, those are the only two movies...where a guy is secretly in love with his friends gal. Maybe they both stole it from Rick Springfield.
Rick who?
The singer of Jessie’s Girl. “ Jessie is a friend, Yeah, I know he's been a good friend of mine But lately something's changed It ain't hard to define Jessie's got himself a girl and I want to make her mine“
She's my best friend's girl But she used to be mine