Luckily, there is a super active community creating awesome Sims 4 Mods out there, having created a number of helpful and effective additions to the game, improving the romance life of your sims. But when it comes to romantic interactions the game tends to be too simplistic from time to time.
The makers of The Sims 4 have thought about a lot. Why you should have a look into Romance Mods for The Sims 4