Recent events such as this may not be online, so you need to get a copy of the record from the jurisdiction where it occurred.
Your other option would be to look for a newspaper announcement of the marriage. Ancestry indexes these announcements, but you need an additional subscription to Newspapers.com to actually see it (not all newspapers are indexed, however).
The library or institutional edition of Ancestry only has the index, but not the link to the actual newspaper announcement.
