How much is in the family bank account? I've noticed that when funds are low, they steadfastly refuse to "embrace". The more members of the family that there are, the higher the bank balance needs to be for them to try without arguing...then again, most of my parents only feel so-so about having little ones in the first place...
Hmmm... I hadn't considered that. I only notice I get the email "Money is tight right now" when there is less than 250 in the bank so, maybe that does have an effect on being "In the mood."
I have had peeps where one was a maybe and the other was a "Not really" which have two now I think. I find perfume/colones seem to work for the mood as well - use a perfume and when the one is "celebrating the marriage" drop the other on top. They usualy go to try.
Baby boost shot I think only helps increase the chance that they will have a child, I've used it twice where it didn't help - both times the women were over 40 - one was 41 and the other was 42.
As always "your mileage may vary"