I have sexed&tipped Livrea for over 50 in game days with high virility in rut,triggered her first date and nothing has changed.
Would appreciate some help.
If you've done the the "date her" scene and chosen the "be lovers" option you should have unlocked the "private talk" option which is where you'll find the discussions about children and marriage. If you did not choose the "be lovers" option you've screwed you're chance.