Chastity fetish focused on quick climaxing

I realize there’s at least one other active thread that covers similar ground, but mine approaches it from the reverse angle. I aspire to be a quick finisher. One of my most recent releases happened after an extended period in lock-up; I finished mere seconds before we could have had intercourse. I inserted myself and just kept still for those few moments without much motion when suddenly I started cumming. It was wonderful, and so did my keyholder enjoy it. She was impressed by how aroused I became that I came almost immediately. For most of my life, I’ve been on the other end of the spectrum, lasting too long, which is quite frustrating particularly when her partner tires out just wants to be done. Experiencing the opposite side was mind-blowing with so many emotions involved: the excitement of finishing early, the slight letdown felt by your keyholder, and embarrassment over my lackluster performance. To add to it all, I pulled out in time, ensuring the moment was wasted too. This left me still buzzing yet free to focus on satisfying my keyholder however she desired.

So, does anyone else enjoy premature ejaculation? Any advice? There are plenty of tips for delaying climax, but very few about how to achieve it quickly.