Warm — Robert Sheckley

He had realized, only seconds ago, that he was in love with her.

Well, he'd tell her. The evening would be memorable. He would propose, there would be kisses, and the seal of acceptance would, figuratively speaking, be stamped across his forehead.

Not too pleasant an outlook, he decided. It really would be much more comfortable not to be in love. What had done it? A look, a touch, a thought? It didn't take much, he knew, and stretched his arms for a thorough yawn.

"Help me!" a voice said, not for the first time -- though it was the first that he remembered.

His muscles spasmed, cutting off the yawn in mid-moment. He sat upright on the bed, then grinned and lay back again.