sounds a bit like Raising a Bat, but not sure though? That's a manhwa about a guy with too much blood and a half-vampire which is his true love...
That's the first one that I thought about too. I really does sound like Raising a bat!
Does it have a good ending? ( T﹏T )
Spoiler
Yes it does! ;)
Isn't it a manhwa, I've read it too
im gonna die... I've remembered a manga where the main character has a true love but he ends up living with this guy who basically is using him as a replacement for his girlfriend who is abroad... the guy has a base clef tattoo and his abroad girlfriend has a treble clef tattoo.... The main character then runs to his true love.... I REALLY WANNA READ THE MANGA AGAIN BUT IDK WHAT ITS CALLED..... LIKE IVE BEEN SEARCHING FOR 7 DAYS AND IM HAVING NO LUCK....