my fiance made an OkCupid profile and gave me access

It's worse than I thought. If nothing else this is interesting as a study in exactly what not to do or be as a man if you even want a chance. 

First of all, she's had the profile for less than a day, and she now has 163 messages. This peaks when online. As soon as signing in, you get around 20 extra messages within half an hour. Add into the mix something like 300 profile views (probably more but its been reset) and 190 "Likes" and it's just completely overwhelming. 

Most of the messages are the same or completely predictable. Some of them are creepy, and some of them are just straight up combative. Here's where I sort of feel sorry for guys. You feel pressured into being interesting, knowing that you probably won't get a response but trying anyway. Seems like a lot of these guys will try literally anything just for a response. 

Some of my favourite opening statements so far:
What about dick size
Wish I lived there :)
What's your nickname?
Nice bottom
Hi Im Phil and it will be a pleasure speaking with you
And the all time winner: Hello Kitty..I liked ur profile so much and liked ur pic so much too ..u r my type...thin and white that s really turns me on..I spend a lot of time also on net watching porno ..we r so far but am interest in sex chat with you..am 24 hours horney ...plz chat me now

Some lessons learned:

1. Be hot. Don't be not hot. 
Or at least, take good photos. Don't take bad photos. If all you have are webcam selfies, time to fix that. Also no mustaches.

2. Don't compliment her physical features.
I know you want to be nice and flattering, but who needs to hear "nice ass" from 20 different guys? Fact of the matter is you're not going to want to talk to that guy after that, even if it's flattering. 

3. Don't try to start an argument.
I know you're sexually buttfrustrated bro but it's not exactly pheremone-spreading when you want to tell her everything wrong with the feminism movement in 500 words. 

4. Don't expect a response. Wait at least a day.
Even if she's online, even if she's interested in you and finds you attractive, even if your message was perfect and witty and polite - you have to put yourself in her shoes. She signs into her okcupid profile and it's like a f***ing waterfall of dicks thrusting blindly in any direction they can trying to find an opening. Add to this, there are guys who just keep messaging repeatedly. These are the worst ones. One guy on her profile has sent 12 messages within an hour period, the last one being "wow, I guess you're not feeling chatty huh?" And he's actually attractive! I know she would have liked him if it wasn't for this buttflustered flurry of insecurity. Don't be that guy. At least f***ing pretend that you have other s*** to be doing with your life than pressing refresh to see if you got a reply. She literally can't handle all of these messages at once, but there's a good chance she'll go through them anyway eventually.

Honestly, I prefer online dating as a guy. I seriously do. If you can learn how to not be creepy, present yourself well and exercise your inner-monk patience, it's a better experience. The girl experience would be enough to make me delete my profile after a couple of days.