In CAS give your Sim the Marriage Material Trait.
This trait unlocks a new social menu and social interactions you can use to make the connection with a target Sim closer.
Social Interactions:
-Share your life values
-Open up about getting into relationships
-Offer an honest opinion
-Mention new woohoo techniques (will build romance faster, boost flirty mood)
-Be respectful
-Agree to treat each other as equals
These interactions will show your romantic interest how open, balanced, and ready you are for a full commitment.
