Love You Always

It all starts with a little game of truth or dare...
That was my first mistake. I've never been able to resist a dare and he damn well knows it. Trust me, I realize it's a personal flaw I need to work on.
My second mistake?
If I had to hazard a guess, I'd say it was when I agreed to a frenemies-with-benefits situation in order to get him out of my system once and for all.
The third one, just in case you're wondering, was in thinking this wouldn't explode in my face if I came up with a list of rules for us to follow.
1- This is in no way a relationship. It's strictly dickly.
2- No sleeping with other people while knocking boots.
3- Our situationship stays on the down low
But then he tacked on one of his own- no getting myself off unless it's in front of him.
Oh...did I forget to mention that the guy in question is Ford Hamilton, my ex-stepbrother? The very same one who may or may not remain an ex for long.
There's only one thing left to say...
FML.