Well, well, Mirra, you sure said quite a mouthful, lol. We certainly appreciate the anatomy lesson, but I'm certain most of us, if not all, know what a vagina is and where the clit is located. About feeling "full" or "stuffed," I've had partners that want and beg for that deep penetration ("deeper, harder, faster"), especially the squirters. However, what works for Jill, may not necessarily work for Jane. Some women are very sensitive, while others require a jackhammer to get them off. So it really boils down to a matter of preference. Regarding Lina, she's a filthy, gross ass pig, and a slob. She doesn't clean, I've never seen her cook, and she's always up to her knuckles in her nose, totally repulsive. It's a shame really because she has a nice body, and she's not ugly. However, and to repeat what most of us already know, beauty is only skin deep. Just the fact that she's a slob draws away from her attractiveness. If she's bored with Mark, like you say, due to lack of performance, inexperience, etc. why hang around? Could it be that she's really not good at anything, except picking her nose, and is riding Mark's coattail? Now consider this, what if Mark is bisexual and is beating his meat to dudes on his PC?