I don't even have a clue who Tanya is??? If I even met her, I shut her down and has not been in my game since 0.01...
"Next up is When? Is this THE endgame? The "Lived happily ever after"? Or, is it made as a foundation for the Harem, having a succession of "marriages" as each girl joins? Or, as I mentioned in "Why" when they find out that they are pregnant?"
Your not ringing Grandma's bell yet, nor Jamila, the twins, Ophelia, Priya, AMY (probably in Paris), and many others. I suspect that the game won't end before you knock up the 30 women in the relationship screen and marry 5 or 6 of them...