What Venus does in a chart
Venus is the part of the chart that answers one question:What do I find beautiful, and how do I show affection? It describes love style — not events, and not outcomes.
What Aries does to it
Aries is a fire sign, so it moves on impulse and enthusiasm. It is also cardinal, which means it starts things. Put those together with Venus and you get loves like a pursuit — direct, quick to start, applied specifically to love style.
Aries is ruled by Mars, so this placement tends to be coloured by drive and desire as well.
The useful version
Placements are not verdicts. This one describes a default setting, not a limit — the things listed above are what you do when you are not thinking about it, which is exactly why noticing them is worth something.