Much as I love this idea, I remember my Mum saying something jaded to me when I met my first H...I was only 17, and it broke my heart, as I was so innocent.
But...... if I was going to add to the list :
If you are his first girlfriend, and you marry at 20, there's a high chance that he will get to 35 and realise he has missed out on lots of vagina, and will start to play away
Don't expect him to do any meaningful housework - they don't see the dirt
If his family come to stay, the lions share of the prep will be down to you
If you split up, blood is thicker than water, and no matter what the reason, his family will side with him
Don't start buying birthday/Christmas gifts for his side of the family, or before too long it's another job that falls onto your list indefinitely
If he has a "big job" don't expect any help with night feeds
Don't put up with even the tiniest of infidelities, otherwise you give the green light, and it will grow and grow until it's full sex with other women
If you split up, don't expect your closest friends to give a shit - most friends are fair weather friends
If you split up, kids are affected forever, they don't just "get over it"
If you come to a relationship with a house, do not put him on the mortgage or deeds
If you have savings, keep them in your name
If he doesn't pay maintenance on time, report to CSA immediately, don't believe he just forgot...it will go on and on, as a form of control
Before you leave, copy his wage slips, lest he lies to CSA.
If he assaults you, report it to the Police.
And lastly, if you are thinking of leaving him, but scared, think of these metaphors :
"The ship is safe in the harbour, but that's not what ships are for"
AND
"You could be the whole package and still get delivered to the wrong address
When you get delivered to the wrong address the receiver is going to mishandle you because
They don’t know what to do with you
They weren’t meant to get you in the first place
They don’t value you enough"
There is ALWAYS a man waiting at the right address who will cherish you (in my case this was true)
I am sure I'll think of more!