He's not grieving for Jess anymore but he's grieving for the loss of his humanity now. I don't know if Jess should leave. I think he is responsible because he's the one who made Yohan a vampire and therefore should guide and help him, but also, I think Jess should leave because I don't think Yohan still loves him anymore.
I like men with huge tiddies (and maybe a little obsessed with me) kinda also wished I’m a guy in a bl manhwa and a bottom