Just like she is right? Are you going to marry this guy or move on? Are kids in your future? How about a house, are you two moving in together? Probably all the same crap nosey family and friends want to know. Are advertisers an omnipresent nosey entity? Probably :-)
When my first kid was born, all the ads I got where either baby clothes, daipers etc., or Second Love. A clear separation between A and B
Makes me wonder if there are a lot of people who start cheating once they get a child. What exactly is that algorithm trained on?