>>280344194
>What makes a romance “mature” to you from a writing standpoint?

-Not taking the entire manga (usually 100+ chapters) to confess or realize that they share mutual feelings especially when one party makes their feelings obvious.
-Not letting something trivial, such as miscommunication, ruin their foundation.
-Not freaking out when an ex-boyfriend or ex-girlfriend come around. Even if the ex tries something sneaky they have faith and trust that their partner will put a boundary up.