There are two ways you get notification of your friend’ wedding. First of course, you are notified personally by your friends. This one happen when you are close enough. Second, you are notified by others. It is good if the notification also comes from another friends. I mean a friend who is in your circle. In that sense, I think I consider myself lucky. At least I was informed by the latter option. Imagine if you found out your friend who you think you are close enough, is getting married, from strangers aka those who are not your friends. The feeling must be horrible.