You got most that I can recall. As mentioned above, I do think Jimmy/Amanda were setting up Doc Mid-Nite before they cut their run short but other than that, she basically just keeps it casual and enjoys being single. Frankly, her New 52 relationships seemed really rushed/non-committal (Val quickly picked up and dropped, Michael the same) so she's mostly just living the solo life.
My memory may be fuzzy but I think something was going on with her and Will Peyton at the end of his Starman run? She seemed attracted to Dick Grayson in Power Girl #17, noting she "digs me some Dick Grayson in the kevlar pajamas" and they had some great chemistry in that issue. Beyond that, overall she doesn't have any long-term love interests.
And so I don't get thrown out of the cult... Have you heard today about our Lord and Savior, PowerWing? Would you like a Fresca?
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