[Biffy arches into the touch, letting out a soft sigh of contentment. It's a sweet sentiment, and he's glad that Eggsy takes the time to express it.]

I'm glad though, that you weren't around then... it's good to have you now, I couldn't bear to have been through losing you. [He knows, of course, that's it there, on the horizon, it's not like his immortality has exactly gone away, but he doesn't want to think about that right now]