ahhh its the very first thing here https://rentry.co/1967-1994

the VERY first time they met, my s/i [ a lawyer ] was in the fortress of meropede helping a highly esteemed prisoner get a shorter sentence.
my s/i accidentally bumps into wriothesley because he was too busy looking througg high client's files to pay attention, & like any cheesy meetcute, wrio gently grabs him so he doesn't fall [ not without a small scolding of 'watch where you're going, especially down here in the fortress' ]

in the literal ocxcc sense . . charlotte actually ran away from her old house in search of something new & ended up in alberta, she entered a bar & saw him cage fighting ... pretty basic but! they were the only mutants in the bar so they bonded a lil just to meet each other again in the x-mansion