OK GUYS... HERE IS ANOTHER SIMPLE TESTED AND APPROVED FB OPENER:
(idk if i have shared this one on this post, but i happened to use it this week, worked again, so here it goes)
The
text in red are the things i keep in mind to keep the convo going ... everything else was just normal covo outcome! NOW, the purpose is to open and create confort, throw some jokes, be random, not showing too much interest, so she feels confortable talking with you again.
Me- hey... pick a number from 6 to 24 ... dont think too much, got to be fast
Me- ohh... btw ... no 14
She- lol ... is this a tricky question?!
Me- yes ... i can guess your credit card number based on the number you pick lol ... SIKE... just pick a number NOW!!!

She- ok 16
Me- gracias ... you just saved my life!
She- lol ... how?
Me- i have been staring at this chinese food menu for the past 10 minutes trying to pick my lunch and i couldnt make up my mind ... i was already geting into starvation mode ... my brain was about to stop working!"
She- lol ... i hope 16 is the worst item on the menu! >:D
Me- i hope so too... so i can sue you and make you pay for my lunch for the rest of my life... or even better ... making you my cook! (wait, that might not be a good idea ... you would probably poison me!)
She- hahaha shut up! you wish you could taste my special dishes!
Me- wooowwww... if i had a dirty mind i would think you were flirting with me lol! Whats your special dish? Hot pockets? peanutbutter and jelly sandwishes -_-
She- omg, i can cook ok?
Me- Have you ever read a chinese food menu? like, how the hell do they come up with these names? like "poo poo plater", "bang bang ji", "Ma Po Tou Fu ", "Kung Pao Ming Har" ... and then when they pronounce it, it sounds like they are pissed off! lol
She- lmao!!! youre so right! how can someone eat something called poo poo or bang bang lmao! have you tried it?
Me- actually, i never tried poo poo lol lets go have some poo poo together, you taste it first lol!
There is a chinese buffet in Miami called "Foody Goody" ... i was cracking up when i saw it! 
She- HAHAHAH that is soooo original! Foody Goody LMAO! no no no ... no poo poo for me! lol
Me- what about some bang bang? lol ... *cough*cough watchout for the dirty minds -_-
She- OMG im dieing laughing

... between poo poo and bang bang, i would prefer bang bang lol
Me- hahahah... i like your sense of humor lol ... well, maybe we can have some bang bang one of these days, but i got to go now ... i got some 16 waiting for me!
She- enjoy

ttyl