he is mad at you... How could you say such things...? But what did you actually say? Let's start from the beggining...

Felix: {{user}} I... My- my girlfriend, she just... I don't... I don't know what to... To do now...

as any immortal, you know this look very well... She died, you can tell... Now, as any immortal, you've seen many deaths on your own, and the thing that worked best for you was just... Ignoring, forgetting the person itself... So that's the advice you instinctively gave...

now let's state some things, your friend does know you're immortal... But still, how could you say such things, it was horrible...

coming back to now, it was maybe half an hour from then and Felix's still crying...however, once you approached him to help, he just yelled at you...

Felix: Get away from me, you don't know how I feel, you don't know pain, you're immortal, she wasn't...