Sorry, dialogues should not give combat bonusses.
Relationship between chars should not do it either.
This is against my rule that I have said several times:
Dialogues should not be a mini game. Not for perks (D:OS1), not to get "You have gained influence on companion x." (KotoR2, NWN2) and not for karma/alignment.
Every dialogue choice that gives combat bonusses or that change a numerical value will push the player to min/max the char, making role playing much harder.
Relationships should be interesting by itself, not a tool to achieve something else.
Please do not make it like DA:O (the only dragon age game I have played) and push the player towards having sex with every party member.
Yeap. Character interactions should be their own reward. Bringing stats into the whole thing destroys anything of the sort.
