Ah, the romantic gesture. The more one party in a relationship desires it, the less the other party seems to understand what it means. People tend to overthink what romance really is. Perhaps they think big, elaborate overtures much like what you might see on an episode of The Bachelor, like a sunset helicopter ride or champagne for two in a highly improbable desert hot tub oasis. But it's so much simpler (and better) than all that.
It really boils down to two things: being thoughtful and being proactive. And what's more thoughtful than a little gift to say "I love you?" You don't have to wait for a special occasion to express your adoration (that's the "proactive" part.) If you're in need of some inspiration, read on.