They REALLY need to add a step-parent relationship...

Given that blended families are so common these days it's pretty sad that a step parent is not recognised formally. It's weird that my sim who has been brought up by her step dad since birth can grow up and form a romantic relationship with him.

It's even stranger that in laws are not recognised and again darn right creepy that in laws can hit on their son and daughters in law (and occasionally autonomously do) and yes I know that can happen in real life but I shouldn't have to watch my sims in laws and children in law to make sure there isn't anything inappropriate going on.

The sims 2 and the sims 3 managed this feature fine, it boggles my mind that the latest game cannot do this.