I think the insinuation in Nightwing/Huntress was that Helena slept with Dick to get closer to Batman, but I don't have the exact verbage in front of me. Or it could have been after the fact that someone came up with that. I'm not entirely sure since the Dick/Helena fling has been portrayed by different writers in different ways (she wanted more/he wanted more/both that it was a mistake). It happened only once but it seems to get brought up a lot (in-comic) since then.
I know Tarantula was evil (thinking she was good) but I seem to recall the big debate at the time was because she very clearly seemed to have raped Dick when he was in no position to consent, yet Devin Grayson and DC (forget who edited NW at the time) started equivocating on whether it actually constituted "rape". And the fact that Tarantula basically controlled (for lack of a better term) an out-of-it NW for months didn't help either. It was a big debate at the time IIRC.
And I have resolved never to use the words "M*** S**" again. Everyone's right they have lost all meaning these days. Apologies all around.