What month will you be getting married? For example, if you were getting married in December, you could use #MayDecemberRomance or modify it to suit the month you are getting married in: #MaySeptemberRomance.
If you are getting married in May (and with that also being you new future last name), you could go with #TheMarryMonthofMay
Re: Last name May Hashtag Help!
#BestMayEver
#YouMayKissTheBride
#MerryMarriedMays
#MrAndMrsMayrried
If you are getting married in May (and with that also being you new future last name), you could go with #TheMarryMonthofMay
OR
#ItsGonnaBeMay (alternately: #WereGonnaBeMay)
#WillYouMarryMay
#MrandMrsMayrried
or
#ItsGonnaBeMay ('NSync
More suggestions: #MarryMayI #MayIHaveThisDance