[Reaches for his hand almost instantly, as if rushing would protect him from whatever it is.]
[It's a flood of feelings, spanning over many years.
Someone you loved so dearly, suddenly gone, disappeared without a trace. The feeling of frustration when finding no clues, of desperation, even anger that you can't find her. The longing and aching for her. It's mixed with other feelings, too, as it's a memory that got mended over time. You lost her (you hadn't - she chose to leave), you were robbed of your life together (it would've never happened), you always hoped to find her again (it would've been better if you had never found her).
You loved again, and once more they disappeared without an explanation. Everyone around you fell, you thought he'd stay, you wanted him to stay, and he left you, they all left you, and you wish you were with the others in the snow, not here alone, not like this. A mix of hurting and sympathy, of bitterness and understanding. The same confusion as before. Why did they leave, why do you get no answers?
It's your fault, you're the one thing in common. Maybe they don't want you around, maybe they never did. They never stay, afterall. You're not worth staying. (She didn't really want you. He didn't really need you.)
You loved again, and she disappeared too. Chose someone else (she hadn't), left you no answers (she couldn't). Why wouldn't they? Who'd choose you? People always leave. That's how it is. (People always die.)
You loved again, and he gets hurt for your sake, and you can't stand the sight of it. He thinks of leaving, and even considering it is too much for you to handle. No one stays, but you want him to. You hope, this one time.
You loved again, and she can't leave, but you can't be close either. Can never be. She'd choose you, but she can't do it. The same frustration again, the same longing and aching. She still gets hurt, hurt because of you. She's hurt and you can't protect her. You can't let her die. She wants you, she needs you, she never regretted you. You'd give your own life for hers, even if you feel it's worthless.
You've hurt so many this time, hurt so many others before. You have to leave, you have to be away from them even if you don't want to. You can't let it become like it was before, can't watch them die again.]