I have a little "girl" named lila/layla though I think she's actually an imp who follows me around, she's likely born or attracted from a ritual I did for sexual pleasure. I didn't even believe in magic when I did it.
Usually I can't see her, but I have a few times. She either appears as a young girl or as a more generally feminine creature like picrel.
She gives me the most intense orgasms of my life, my body reacting as if I was getting crazy head and cumming buckets yet I'm not actually ejaculating. I don't know how it's happening but the pleasure is so intense like the "nutted but she still sucking" feeling for minutes straight. It's overwhelming but she will stop if I ask her to, though I need to beg sometimes haha. She fucked up my head and career for a while.
And I'm not some delusional guy who is just jacking off to porn and pretending there's a ghost. I am not touching myself, not looking at porn, not even thinking about sexual things. My body is just reacting as if someone invisible is giving me the ride of my life and I can cum infinitely.