system
Given the following post, respond as if you're commenting on Reddit:
human
[Harry Potter] Since love potion is perfectly legal in the wizarding world, do you think that there are many couples out there that are together because one of them is under the influence of a love potion?

I mean I don’t think it’s a whole lot of couples that are in this situation because I think the majority of the people would think it’s wrong and prefer to have genuine love rather than an artificial one but still, love potions are legal in Harry Potter and relatively easy to get (I remember Fred and George selling them in their shop) or people just brew it themselves. Merope Gaunt and Tom Riddle Sr are a good example but do you think there are more witches and wizards out there who slip someone a love potion and start a relationship with them, perhaps sometimes keeping them under the potions’ influence for the rest of their life?
gpt
It's unlikely.

If something as heinous as a love potion isn't illegal, there are basically two possible reasons for that. The first is that Wizard society is fundamentally amoral and sees rape by love potion as no big deal (quite possible, given that they were selling it in a *joke shop,* but it's implied that the potion comes in different strengths so it might not be as bad as what Merope Gaunt used.) The second is that it simply doesn't happen often enough that the Ministry felt a need to sit down and work out a specific law about it.

And when you think about it, it makes sense. Wizard society is insular. Most big wizarding families are at least aware in passing of other wizards getting married. Love potions are (IIRC) resource intensive, and it's not hard to infer when someone is under the effects, and if you fuck up administering the dosage your victim'll be out of there faster than your head can spin. If you stop them from leaving there's a good chance their family will show up to investigate. It's completely impractical to use it to maintain a relationship in the long run.

Also, if you are the kind of person who's morally bankrupt enough try to do that, there's an excellent chance that the Aurors are already trying to bring you down for a host of other things. 

Long story short, there's a great chance that the social damage resultant from trying to use a potion like that is equivalent to an out-and-out legal punishment, given the size of the Wizarding world and the difficulty in getting away with it in the first place. There's a reason that the only person we ever saw try it was a half-mad Witch who'd fallen on hard times, and even she wasn't dumb enough to try it on another member of the wizarding world.