My ex gf would cum from nipple play

The first time we ever hooked up, I found out quickly, we were making out and she immediately grabbed my hands and put it to her tits. She was straddling me so I was able to get both hands involved. I undid here bra and took her shirt off. I started playing with her tits while we were kissing. About a minute into this she was moaning loud and started shaking. I stopped for a second and looked at her and asked if she had just orgasmed. She said yes, that all she needs is nipple play to cum. Well that just made for the best sex of my life. We would be in all sorts of positions and all I had to do was play with her tits (c cups). I never had to worry about her cumming, I’d get her to cum 8-10 times during sex which only made her fuck me harder. I think about those days a lot and how great the sex was.