[He doesn't mind those complicated feelings, as long as this stops you from doing stupid things like that again -- because he meant it, every word he said before, about much rather experiencing the moment of his own death than seeing you die in his arms one more time. Even just once was one time too many.
But he's not thinking about that now (he will have time for it later, too much time as the sight will come to his nightmares, now, a terror far greater than anything HYDRA could have done to him), all of him focused only on the feeling of him there, the way he feels hot and cold all at once, shivering and burning up and above all like he could just stay here like this forever.
Which is why he nearly misses the light behind Art, the flicker there the only sign that something is approaching; but it's only nearly. With a quick movement, he moves the hand on Art's back to his neck, breaking their kiss for a moment as he uses his hand to pull Art closer, against his shoulder, his other hand reaching for his gun quickly.]
Sorry, darlin', just a second. [And he loads the gun and shoots in one smooth movement, the creature that was about to attack them gone in a flash that's somehow far brighter than his attacks were before.]