What's considered a big / medium / small penis?

I've slept only with one man and he was exactly 6'2 when hard. In our seven year relationshop I orgasmed only five times through penetration and everything else was always through clitoral stimulation. I know my body well and I can have multiple orgasms. However, one month before we broke up, we had a huuuuge fight after which we had sex (we were on vacation). I was riding him for about 45 min. and i came like crazy from the penetr.alone. I realized then that it had been yrs since the last time i orgasmed from penetration and that it was because he would change positions all the time during sex whereas that night i came because there was enough time for me to enjoy just this one position. He is an ex but i cant help wondering if his dick was big enough for me... also in the beginning, after losing my virginity to him, he would say he liked my tight pussy... but in the last couple of yrs he would even ask if i felt anything and would tell me i am too loose/ big for him. I mean we used toys but it wasnt fair cause i only ever slept w/ him. Of the five times i orgasmed from penwtration, two times were during missionary and three from riding him.