If you aren't dating anyone at the moment, just pretend you are.
I'd say the cutest thing she does is since she's originally from Honduras, she speaks Spanish really fast when she gets mad at me; I haven't the slightest idea what she's saying, but I think it's just absolutely adorable.
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She always has coffee ready in the morning. As I fix it, she wraps her arms around me and nibbles my neck telling me to call out. [spoiler]I no longer have vacation time at work. [/spoiler] [spoiler]And she's a redhead [/spoiler]