Stimulate while hitting.

Despite being turned on by the soft voice of your girlfriend each time you struck her gonnads, you decide to make her feel a little good too while you're at it. You gently tease the tip of her cock visible under the fabric with your thumb and play with her slit, making her moan in your chest while still trembling then you slowly goes down and grab her ass strong enough to make her stand up instictively and squeal.

"Hey ! Be gentler dumbass..." she says while looking at you in pain still unable to protect her groin.

"Come here you pain slut" you cup her cheek gently for a gentle and passionante kiss while teasing her slit which made her weakneed and moan at the same time. Her initial intention to cup and defend herself switched to one of pleasing you and you noticed that her arms weren't fighting back anymore so you let go of them, letting them fall to her sides.

You grope her breast and squeezed them. She moved her head to the side to reveal her breast better for you. After some squeeze you lifted their weight and let them fall knowing that doing that would stimulate her unused mammary glands by letting the weight pull them down.

Each time you did so she gasped, it was a bit uncomfortable but felt good and was by far way better than the beating her poor balls received until now. "You like that ?" you asked her.

"Yes please keep going~" She said while starting to breath more intently at your breast play. You slowly moved your hand from the base of her breast and draw a line alongside her breast form before brushing lightly her nipples back and forth which made her twitch everytime your gentle touch teased her.

"Haah~" She gasped and and completly relaxed to feel the pleasure you were giving her more. You decide to stroke her nipple with two finger and lick the other with the tip of your tongue while admiring her gesture. You moved your hand down her penis and found that it was rock hard ready to burst. Looks like she forgot what was this whole thing about.