I believe the hacked wedding arch will allow teens to marry.
You can find all The Sims information in one place. Best Sims 3 mods, Sims 4 mods, cheats and other cool Sims stuff. and I will be including whims/goals etc for teens when I get the time. The Sims 4 Teen Pregnancy and Marriage MOD Inteen for Sims 4 Teen marriage Teen pregnancy Teens can also marry YA/adults/elders and vice versa Teens can also impregnate YA/adults and vice versa Romance enabled for all ages.except children This is an early version.very early, the game has only been out about ten days.
