Reviewed:
The concept is simple; a lesbian and her bi lover are in rhythm, their periods on the same days of the month, So, when they decide to have a baby, it is cheaper to have a man do it in vitro, shall we say, than to have it done by a donor.
The only thing is, the lesbian gets fucked too, and in the melee, the 'donor' impregnates her as well. Now I'm glad to say that alls well mthat ends well, and they end up both pregnant.
Enjoy!