platonic
Pleasant, caring, and somewhat shallow. You will have a good time with him, but never quite know where he gets access to things or the cash to blow on endless diversions. Trust won't come easy, or much at all, so it's probably better not to ask. But hey, enjoy it. You'll never tire him out and probably never see him eat or drink a thing.
romantic
Though he's fine with scoring a lay and acting all casual about it, nobody else will get closer than that. Again, it's a matter of trust. A true lover would worm their way deeper into his life, and that much he cannot afford. Secrets have to be kept, greater than all the crime that sustains his lifestyle. Secrets as dark as blood congealing.
antagonistic
Probably everyone in the Hearts, and whatever other piss-ant aspiring to power. If they know him, then they know enough to be scared of how he ruthlessly dispatched or seduced the previous boss's structure. Potential enemies are legion: anyone who hates the Infected and would love to see them wiped from the world. See? There's a reason for all that secrecy.