Every time we meet, my papa keeps increasing the number of times he wants sex.

I've been seeing this papa (a male supporter) for about three months. At first, it was only once, but now he expects 4–5 times during a three-hour hotel date. I like him, but around the third time, my vagina starts to hurt, and it's really hard for me. If the number of times is going to increase, I’d like my allowance to increase too. If he doesn’t want to increase the allowance, I’d like him to limit it to one or two times. It’s not that I dislike him. He’s a man I’d like to continue getting along with. Is there a way I can tell him this without hurting his feelings?