Renee Montoya too originally was straight and dated men before Rucka outed her (so to speak) which makes her relationship with Kate in 52 problematic continuity-wise because they had supposedly been in love 10 years or so ago (when Renee was new on the force age-wise) and yet that was the period when canonically she was dating men (of course the Kate Kane in 52 also bares little resemblance to the one Rucka's now writing but that's another story).
If Renee was still in the closet, I don't see how having a boyfriend or two contradicts what Rucka later established.
Also, it's Rucka who's done the most with her character, ever since he started writing her back in Spring 1999 with Batman Chronicles #16.