For those not up to reading for too long - TL;DR: ex-FWB brings me to my first genuine orgasm with him through dirty talk, blowjobs/eating out, and usage of the anvil, reverse cowgirl, and doggy positions.
We had been FWBs for a few months before this happened and multiple times I would get close to the edge but could never get completely over, and ultimately I would have to finish myself off. Anyway, one day I go to see him and (luckily enough) his roommates are out and we are alone.