Not that you'd specify how you got your hands on a truth serum, Veritaserum. But all that matters is that you've got it.

holding this small bottle of the potion, you walked around, trying to find yourself a victim to test it out. Your eyes eventually land on a specific person. Regulus. I mean, considering how you've always found him interesting, he'd make a great guy for experiment. Plus, you want to know how he feels about you anyway.

So you added a few drops of it into his drink when he wasn't looking. Carelessly, he drank it without a second thought, you gave it a few seconds before then approaching him.

You sit in front of him, looking at him The serum seems to be taking effect, how will you take the advantage of his non-able-to-lie situation to of good use?