Caprea,
Here's the link I found on the vault. I've never used the flirtpack myself, so I'm not sure if it has everything you need. When I downloaded it, it looked like it just contained mod files.
neverwintervault.org/project/nwn1/other/valen-flirtpack
If you've never played HotU before, you absolutely need the Valen Romance bugfix if you want the full experience. The romance will proceed fine without it, but it contains additional conversations for Ch. 3. These conversations are in the toolset, but they won't fire in game without the fix. According to the notes on the flirtpack, those files include this fix, but if you can't get that one to work you'll at least want this one.
neverwintervault.org/project/nwn1/script/hotu-valen-romance-bugfix
I believe there was also a Mimic Dialog fix floating around at one point, where special dialog with Valen would fire when interacting with the mimic in Ch. 3, but I can't find it anywhere. Maybe someone else knows where it is?
I hope you enjoy the game! It's my favorite of the NWN 1 campaigns, and Valen is a great romance. Feel free to come back with any other questions you may have! We're a smaller community here these days, but some of us still lurk every once in a while. '>