You’re mind is set on one thing, and one thing only: the pair of creamy udders flush with your face, begging to be sucked.
[suggested revision]
Your mind is set on one thing, and one thing only: the pair of creamy udders flush with your face, begging to be sucked.
(Also consider replacing "sucked" with "suckled" to signal the increased intimacy of the scene)
Your mind is set on one thing, and one thing only: the pair of creamy udders flush with your face, begging to be suckled.
(Further revision suggestion)
They jiggle with Lerris’s husky breathing, rising and falling on her slender chest.
They jiggle in time with Lerris’s husky breathing, rhythmically rising and falling with her slender chest.
[suggested revision]
Your mind is set on one thing, and one thing only: the pair of creamy udders flush with your face, begging to be sucked.
(Also consider replacing "sucked" with "suckled" to signal the increased intimacy of the scene)
Your mind is set on one thing, and one thing only: the pair of creamy udders flush with your face, begging to be suckled.
(Further revision suggestion)
They jiggle with Lerris’s husky breathing, rising and falling on her slender chest.
They jiggle in time with Lerris’s husky breathing, rhythmically rising and falling with her slender chest.