i know this might be overdone... sorry
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i've seen dermin 3 times and killed him and his party on the third time. had a few chats with jaheira after that (say 3 or so). and then i got the offer 2 spend the night with her. i've heard that you are supposed 2 get a harper 's pin from terminsel after that but when does that happen? i'm currently waiting to start the 4th chapter in the spellhold or should i still wait?
jaheira romance... SPOILERS
If you spend the night with her, then your romance is complete. She doesn't talk anymore, which I think is a shame, but you'll sleep with her every night. She'll say "good morning" if your party is awake at a certain hour, and it's very obvious what you were up to the night before. Eliminster comes later on and gives out the pin, usally in chapter 6 sometime. Don't go to 7 without seeing him though. On a side note, it'd be nice if Jaheria continued to talk after the Romance was succesful, as Viconia and I'm guessing Aerie do. Well hopefully some more in the expansion...