Crying could get you laid (just don't cry WHILE you're getting laid). Of course, it depends on WHERE you do the crying, because we ladies don't get turned on by man tears just anywhere.
So where can you bust out the waterworks and get rewarded with some possible action?
92% of women get turned on by a man crying at a wedding, and just under half start looking for single guys as soon as they get to a wedding. My advice is to save the tears for the actual ceremony, but be sure to be within eyesight of the woman you were chatting up beforehand.
If seating arrangements make being within eyesight impossible, just be sure to tear up when you're talking about how magical the ceremony was, and how you imagined yourself up there by the altar one day...and she'll be eating out of your hand, since half of women say they picture themselves up there.
Now's the time to start practicing...there are tons of weddings still left during the summer. If you don't have an invite, you could always try crashing some weddings. If you manage to pull off the tears at a wedding for people you don't even know, you're set.