You are better off as two girls. True, Pam has been pushing you around and deserves to be your boobs, but you are not sure you can force her to be your boobs. You might end up hers. Better to let it go. It hasn't all been humiliation and suffering after all. In fact a lot of it was great fun. So forget it and see about getting out of this crazy situation.
So you are not surprised to wake up in bed besides Pam. Since she is still sleeping, you gently get up and head for the door. ...Or try to anyway. You feel a hand on your leg before you are even off the bed. "Whoa! Where are you going, darling?" is a sleepy Pam's question.
"I am getting out of here." is your response. "I am not going to be a boy's toy, not if I can help it."
"Now Sam is a nice lad.." Pam tries to soothe, "...and you were enjoying his attentions..."
Is she calling you a slut? Probably not if you examine the statement calmly and rationally. However you are not really either... "I am not some slut who just throws herself in a boy's bed!" Technically that is not calling Pam a slut either, not precisely anyway.
Pam of course ignores the technicalities and her next statement is definitely insulting, as is your response. The conversation goes downhill from there. Pam is the one who first says "You are going down! Bitch!", but that is your attitude too. Pam is going into your guts here and now!
Both of you rush at each other, your mouths open wide to try to swallow each other. You meet in a massive kiss that is pretty much a draw. Gaining no advantage to speak of, you recall your breast vore and next try to draw her massive mounds in. Your legs have each gotten tangled between the other girl's thighs, which is quite stimulating, but you recall your un-birthing, and try to draw her legs into you.
It's working! You feel her legs slide in, and doing so in a most erotic manner, like they were oversized tools. You feel your excitement building until it reaches the top and you just explode in sensation, a sensation that is all the sweeter for knowing Pam will be your prisoner soon, trapped in your womb.
A second wave of passion heightens your pleasure, until you feel Pam happily enjoying her own overwhelming excitement. What has she got to be so pleased about? She is going into you, isn't she?
That is when you realize that you are also going into her! Her legs may be deep into your womanly center, but so are yours in hers! And now you realize the same is happening with your chest! You are absorbing her swollen wonders even as she is consuming your beautiful breasts. Even your mouths are working both ways. Somehow you have swallowed her head and she has gulped down yours.
It's clearly too late to retreat. You must eat her before she can eat you. So you redouble your efforts to turn her into your nutrition. You can feel Pam doing the same, or you can until a double climax very wonderfully distracts you. Quickly you return to getting all of Pam inside you, and quickly your are shuttering with joy again. And so is Pam. Nor is it close to the last time for either of you.
Somewhere in the fog of passion, you wonder what the two of you look like. Some sort of big ball? Or are you spouting 4 legs that are wiggling around. And as deep as your breasts seem to be into each other, are they pushing thru the back of the other lass? Have your arms sunk into Pam? Have hers sunk into you? There really isn't time to be at all sure. You seem to be winning, but the fight is definitely close. And exhausting, very pleasantly so, but still you feel yourself and Pam getting very tired. You will likely be completely unconscious as the last of Pam [or maybe the last of you] is consumed ..