
Here are the spoilers
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If I'm understanding what people are mentioning in the comments right...
Apparently Henry was not a good person either, and Victor was in a toxic relationship with him. Henry was the local neighborhood hoe and everyone knew, but Victor just saw Henry through rose colored glasses, but also Victor was using his money and house to keep Henry in a relationship with him like a 1950s husband trapping their trad housewife by making them financially dependant on them, and Henry was using Victor for his body & money and making him emotionally dependant on him.
Victor is a relative of Henry, and they were friends since they were both orphaned as kids. Henry noticed that Victor potentially had a crush on him, and tried to seduce him as they got older because he was conviniently there, and possibly to secure he always had a roof over his head.
Henry got Victor into a very emotionally codependent relationship with him, all while also seeing multiple people and using the excuse of "they don't mean anything, it was just physical, I only have eyes for you" kind of thing. Victor belived this, but he is also kind of messed up, and threatened to kill Henry if he ever thought about leaving him or moving out of the house (which he didn't, he died some other way, but Victor still feels guilty all the same).
However because they both had been dependant on each other for so long in order to survive being on their own as kids, Henry was also entirely dependent on Victor monetarily as well, in order to eat and keep a roof over his head, and Victor used this to keep Henry from leaving him too.
Henry liked Victor, but in the same way he liked all his other boyfriends and girlfriends, Henry was literally the residential neighborhood hoe despite Victor not wanting to believe he was. However Victor was rich even as kids because he was orphaned and inherited his family's money, so Henry (who also was an orphan now, I dunno if their parents died in the same accident or what) was using him for his money and huge estate too, and has been doing this since they were like grade school kids.
This is the olden days, so I guess because they had the funds to survive on their own, that's why they weren't taken to an orphanage despite having no parents or something.
The heart, represents the feelings that Henry did have for Victor.
The dick, represents the side of Henry that slept around with whoever whenever he pleased.
And the head is Henry's messed up personality, minus any form of caring and compassion he might have had (heart has all of those). So he's a bit of a psychopath, meanwhile the real Henry was probably more of a Sociopath.

Cheers momo for the great spoilers, I’m still gonna read this for the gooner 4p and I love a little toxicity…. But I must know, the description of the manga eludes to a possible fifth love interest, does this mean that thes gonna get a happy ending with another or are the raws not up to something like that yet
UGH I JUST SAW SOME SPOILERS AND IM DROPPING THIS