What to do/am I an asshole

Sooooo this guy I’ve been talking to, he doesn’t live in my state, but he lost someone a few months ago due to suicide/overdose. She didn’t live in our country, and she was an internet friend (not discounting internet relationships) but my point is he doesn’t actually know how she died/if she’s REALLY dead. Anyway, we’ve become really close, and we’re kinda together/not together. We love each other, and we talk a lot. However, I feel like he forgets I’m alive ? Every conversation revolves around her. Every single one. And if it doesn’t, she comes up every 10 minutes. (Let’s call her meg) “meg loves you. I dreamt of meg. Meg liked this. Meg wanted that too. I’m sad about meg. Meg said this once” and like, I understand. I really really understand. I know it’s difficult, I know. But we spend more time talking about her than we do anything else. And he asks for my opinions on her, and I didn’t even know her. So I never know what to say. I want to help him, I really do, and I understand it’s hard. I let him talk about her, I listen. But it’s like... I don’t know, I feel as if I’m taking on two people instead of one. It’s not jealousy, it’s not anything. But it stresses me out. I mean I’m obviously not going through what he is, I know that. But to some extent I am ? And if I try to bring it up, he flips out. I’m not trying to hurt him, I’m not trying to dismiss it, I just can only handle so much. And when I bring it up he’ll ask me how I would feel if someone were dead. Someone I really love and cherish, and he knows that, and it makes me so angry. Like I don’t want to think about those things. I just don’t know how to help him. He’s inconsolable. But it’s all we talk about. I don’t want to be a jerk, I want to love him and care for him, but I’m under so much pressure and anxiety already and it almost makes it worse. Am I an asshole?