In love, Venus in Aries moves fast and head-on. No six-month courtships, no hints and pauses. They like someone, so they walk up, they message, they make the invitation. A plain "I like you" comes out easily — sometimes too easily, because it gets said outside the right moments as well as inside them. The chase, in my experience, tends to come off brilliantly: the speed, the boldness, the willingness to cross the country for a second date. It's the settling-in phase that lands harder.
Inside a couple, this is the person who sets the tempo. They're the one inventing the dates, booking the trips, picking the restaurant. A partner either catches the rhythm or quickly falls behind. The other side of it is that, once a relationship steadies, Venus in Aries starts to get bored. When the partner stops being a goal and becomes a given, the interest dips, and then a new thrill gets sought half-consciously — a row out of nowhere, a flicker of jealousy, a flirtation on the side to feel the heat again.
In intimacy this is an initiating, passionate partner who isn't keen on a slow build-up. The lights can stay on, the romantic playlist is optional; what matters is the action and the drive. With someone who treats closeness as a ceremony, the contact tends to fade quickly. With a partner who can match the same speed and the same push, though, the configuration can stay alight for a long time.
The real difficulty is exactly the one I flagged in the shadows. Infatuation gets confused with love, and decisions get made at a hormonal peak that passes in three months while the commitments stay. I'd put it like this: the central task of love for this placement is learning to tell the hunt apart from attachment, and not to draw conclusions about a partner in the first six months of knowing them. None of this is a script you're bound to follow. It's a pattern worth noticing in yourself.