Fics like The Five Love Languages

How fluent are Nick and Greg in the five "love languages?" Each chapter is a different love language.

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5. Babydoll by SocksAreArgyle (CSI: Crime Scene Investigation)
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14. GSR vids Pt1. by Superheroindisguise (CSI: Crime Scene Investigation)
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18. [Vid] A Different Kind of Love Song by giandujakiss (Supernatural, Xena: Warrior Princess, more)
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20. Little Wheels by carolinecrane (CSI: Crime Scene Investigation)