Just enjoy it. Aren't you the noble Angel?

Sam's Adam's apple was tinged with a distinct crimson hue – a deep kiss mark left by Angel. It was glaringly obvious, seemingly impossible to fade in less than two or three days. 

Sam was understandably annoyed. Kissing was one thing, but leaving such a mark? That was too much!

In retaliation, Sam was determined to do the same. 

After leaving a similar red mark on Angel's neck, he finally lifted his head, satisfied with his work. 

By now, Angel had completely succumbed to Sam's allure. Her eyes were hazy, lost in the depth of the moment. 

She gazed at Sam, her vision blurred, wondering how she ended up so passive.

She had thought herself in control, believing Sam wouldn't dare do much, like a wounded prey under the hunter's command. Yet, this 'prey' had daringly resisted, becoming unexpectedly assertive.