견물생심
見物生心 · seeing a thing gives rise to desire
Seeing something makes you want it.
When to useWhy you shouldn't go shopping when you're bored.
Related proverbsparrow-and-the-mill
Examples
구경만 하려 했는데 견물생심이라고 결국 샀어.
I only meant to look, but seeing it made me want it — I bought it.