( Alec searches Magnus' face, searching for some hint, some sign that this is bothering Magnus as much as it's bothering him. Or perhaps he's searching for reassurance. Reassurance that this won't change them, that Alec won't just be another mortal Magnus loved until he grew old and frail and died. Reassurance that Magnus will love him the same even then. He knows it's reassurance neither of them can really give. No one knows what the future holds. After all, Shadowhunters didn't always get a chance to grow old. It was common to die young in the line of duty. Maybe all of this was moot. He sighs and leans forward until his forehead rests against Magnus'. A small comofrt. )

I'm concerned that things will change in the future. I'm concerned I'll lose you. I don't want to be just another mortal, just a memory from your past. It's selfish but I want all of you.