The best way to "cheat" is ofcourse counting cards. I don't really see it as cheathing since it requires alot of skill. Cheating in professional poker is impossible due to all the camera's, however it's quite easy when you play with friends / family. Just hide / hold cards or mark them on a way only you know which card it is A really good movie about an autist counting cards is Rain Man from 1988, don't judge the movie on the trailer / release date, just give it a try.
Counting cards has always been the most illegitimate yet accurate way of cheating, however gotta wear shades so no one sees where your eyes are, especially if you're bluffing for real deal poker, just look up Poker bluffs on YT and you'll find a few billion.
Don't just kill the poker, take the money and run off, making sure you leave no traces of you ever being there.
And marry her? Yeah, that would defenitely work (especially with someone like Mary Queen of Scots)... xD