(Okay so... I don't draw Mystery enough, so I thought this is the best way to draw them more)

Me: Hello, I'm Mystery. And today, I'll be teaching you all about the Incubus/succubus AU I  made awhile ago.
So Why do they only feed on love?
Simply because they feed on it, it is the only way they can eat and not die from hunger.
But besides that, the more important reason why they feed off of a love a lot is because the power of the love can have,
Incubus/succubus uses their powers a lot.

Me: They could only get love from Humans, Humans love is very powerful for Demons which is why they prefer Humans rather then their own kind, Demons can't get love from each others.
Demons absorb the love like a sponge, obviously Humans can't see it but only Demons can see love hearts, they can see more than just that but that a did story to tell.
Anyway, If you decide to form a romantic relationship with them, don't be surprised to find out they cheated on you. If you leave them without love for week, they'll have to get sexual love from someone else,
Your demon lover don't know what cheating is, since after all sex/love is what they're made for.
So if you don't want them to cheat on you, feed them well but don't feed them too much.

Me: As you can see here, If you feed them too much love.
They will explore, Leave nothing but hearts everywhere, But Don't worry, they're aren't die, they'll be back at hell. They'll come back to earth, just as long you keep their heart safe, they won't be able to come back to earth if something happens to it.
The only way for them not to explore is if you stop loving them or they throw up hearts, yes it's gross but it's a only way for them not to explore...

Me: welp, that's all I got, if everyone had questions, comment it down below.
Now I must go, see ya