There is no teen pregnancy, no same sex pregnancy, or anything like this. Adults and Elders are not included in this mod. To do this, go to Documents > Electronic Arts > The Sims 4 > Mods.
So they can get to the Mess Around with one another but there is no Woohoo or Try For Baby. This mod adds Sugar Baby&Sugar Daddy/Mommy dynamic to the game You can earn. The teen romance options are the ones available, not the YA options. I wanted to have an updated version of this mod because I get irritated when my two teens are romantic with each other and then one ages up before the other and then they go days or weeks with no romance because the other is still a teen. This mod allows Teen and Young Adult romance with one another. This sims 4 teen mod removes that age barrier that prevented teen sims from getting involved with Young Adults and Adults. You can find that mod HERE This mod has not been updated since May 2016 and reports in the comments say it is broke. But the teens must have the puberty trait first in order for them to do it. I found one mod other than INTEEN that allowed for teens to be romantically involved with Young Adult and Adult Sims. There is an inappropriate unlock made by the creator avaliable on Lovers lab where teens can have sex if you have that package installed in the game, providing you checked the options on wicked whims to enable teens to have sex. Help with my mods or sims 4 in general–> Discord