She needs more sperm

The next morning Julie came over as usual. She was dressed in her usual yoga pants and a tight t-shirt. It looked to me like she was braless from the way her nipples popped and her tits jiggled as she walked across my yard.

I greeted her and asked how her procedure went yesterday.

“It went fine. I did it exactly like the instructions said so it should work.”

“Good news,” I said, my cock stiffening as I thought about her big nipples and how nice her hand felt jerking me off.

She continued, “But here's the thing. I really need to do it two more times for maximum effectiveness. She showed me the little cup in her hand.

My cock was fully erect in my pants now, and I was more than happy to help. Then I thought about maybe I could get her to go a little farther in exchange for my cooperation. So I answered her, “I'm happy to help, but I was hoping you might help me too. As I’m sure you know I have a bit of breast fetish, and you just happen to have an excellent pair of tits. How about you let me tit fuck you today and then I will cum in your little cup?”

She turned a little red, and answered, “Yes, it was hard to miss you staring at my chest, and I will never understand why men want to rub their erections on my breasts, but if it gets you off I’ll do it in exchange for your sperm.”

I was a little embarrassed at her slight chiding, but I wanted to fuck her tits even more. “Let’s do it on my bed it will be more comfortable. Take your shirt off and lie back on my bed.”

Julie did as I suggested, lying back on my bed. Her big melons not drooping to the side as much as I thought they would. Pulling off my shirt and jeans I straddled her on the bed and said, “Push them together for me as tight as you can, and rub your nipples for me.”

I slid my cock between her big tits and let out a low groan of pleasure as I thrust into her tight valley between her tits. She was nice and tight, her big, soft tits giving my cock plenty of friction. She tugged at her big nipples as I fucked her tits, the fat head of my cock popping out at her neck with each thrust. Her dark nipples were fat and swollen and I was so excited I knew I would not last long.

She could see it on my face as she said, “Remember I need it in the cup.” It was right next to her face so I could easily get to it when the time came.

I reached down and started to tweak her nipples. She closed her eyes and I was rewarded with a low moan of pleasure from her and I kept pumping my cock between her tits. I kept up my hard thrusting until I could feel my balls tighten and the incipient tingle of orgasm beginning in my cock head. Grabbing the cup I pulled out from between her perfect tits and started to jerk off right over her face. I could see her staring at my hard cock with what I hoped was a hungry lust. The first long string of jizz splattered the into the bottom of the cup, quickly followed by four more big squirts.

“Yeah, just like that. I need your sperm,” I heard her say softly.

I moved off of her well fucked chest and sat off to the side. She grabbed the cup of sperm from me, put her shirt on and left with a quiet “thanks”.

Weird, but still fun for me.