Imagine Cas healing you when you burn yourself cooking.
You were in the bunker's kitchen, attempting to cook a pie for Dean. It wasn't going to plan, while attempting to put the pie in the oven, you had burnt yourself on the hot metal. You hissed in pain, throwing the pie down. It took you a second to realise what you had done, the pie was now all over the floor.
All of a sudden Cas appeared with a flutter of wings. "Hey Cas," you greeted, sighing. You moved over to the sink, running your hand under the cold water.
"What happened?" Castiel asked, his eyes looking over the mess on the floor.
"I attempted to make pie, for Dean," you answered, grunting when the searing pain of the burn shot through your hand. Cas began to walk over to you, he pulled your hand out from under the water.
"You burnt yourself..." He muttered, looking into your eyes. Bringing it towards his mouth, he kissed it, using his angel healing powers. You were stunned, you didn't know what to do, so you just stood there watching him.
"Thanks," you whispered, shyly pulling your hand away from his. "I better clean up all this mess before the boys get back."
"Of course," he replied, then disappearing.
You sighed, grabbing some paper towels to clean up the spoilt pie that lay on the floor. You move towards the bin, after picking up some of the pie. You threw it in and as you turned around, there was a flutter of wings.
Castiel's lips crashed onto yours, you instantly kissed him back, but the moment was ruined when Dean walked into the kitchen.