Update on this situation: The girl is still single, I poked her on facebook and she friended me.

she has told my girlfriend before "I like dorkley and all, but I'd rather see you be with someone who wants to spend time with you more"

I don't think she was saying this to get ME single, but I could be wrong.

She also heard about a single friend that I have and was interested. She asked if he was in the dating phase with his gf or was he still hooking up with other girls. She has also complained recently that she doesn't have any fun single friends.

Should I wait until I see her in person again and escalate or say something on facebook? Like tease her a bit

lol just another cheating chump whose trying to get the seduction scene to help him.

You will get no help from me if you dont like your current girlfriend dump her and get a new one !
Also dont be in a relationship if you want multiple woman or have multiple woman but dont declare your exclusivity to one.

all the best in your venture you'll lose everything over a silly one night stand.

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You can fail all your life but still achieve more than those who did not try.