People have done worse things, being selfish.

[His hand goes to his shirt off camera, fingering the hem and thinking of the healed up scar on his chest. Much worse hings.] But you achieved your dream and left him behind.

I think perhaps what's more selfish is thinking that his happiness relies on, yanno. You being there. He'd probably be happy for you, move on eventually. It happens. Though at the very least, I get the feeling that you'd like to tell him, so isn't that half the battle?