Compliments and Insults by saintcrazythefollower is required. Check its mod page for a description.

Fixes:

• Magic effects for complimented/insulted NPCs now expire and dispel rather than going infinitely negative.
• Relationship Rank no longer resets to 0 when complimenting a lover or insulting an archnemesis (prevents triggering vanilla bug).
  

Balance changes:

• Complimenting nerfed. After complimenting somebody, you gain a magic effect with a long duration regardless whether the compliment succeeded or not. Complimenting someone while having this effect will severely reduce your chance to succeed in raising relationship rank and the cooldown will reset. This diminished success chance stacks until the cooldown is allowed to reach 0.
• Can no longer reach high/low relationship ranks through words alone. Complimenting can only reach relationship rank 2 (confidant) and insulting can only reach rank -2 (foe). If you don't like this change, download the optional file to remove this limitation. "Relationship Rank increased/decreased" message will play regardless of this limit as long as the speech check succeeds.
• Complimenting (or insulting) someone who is still has the "was complimented" (or "was insulted") magic effect will still guarantee failure to change relationship rank, but it will now also reset their cooldown duration before success is possible again. Don't pester people with your honeyed words.
  

Issues:

• You won't know how many people you've accumulatively complimented without letting your cooldown reach 0 unless you keep track, so let the effect expire.
  

"Which file should I get?"
I think the best balance for the cooldowns in this mod are one in-game day before an NPC can be complimented or insulted effectively again and 18 in-game hours before you, the player, can compliment anybody again without a heavy debuff to success chance. Since this mod's cooldowns are based on real-life seconds and we might be using different timescale settings, there are five (5) options for main files for this mod. You need only one main file.

• Timescale 20:
  

72 minutes for NPC compliments/insults
54 minutes for player compliments

• Timescale 15:
  

96 minutes for NPC compliments/insults
72 minutes for player compliments

• Timescale 10:
  

144 minutes for NPC compliments/insults
108 minutes for player compliments

• Timescale 5:
  

almost 5 hours for NPC compliments/insults
3 and a half hours for player compliments

• No Cooldown (cheats):
  

1 second for NPC compliments/insults
1 second for player compliments

Select the version that matches your timescale the most closely. Default timescale is 20. As you can see on the timescale 10 version, for example, 144 real-life minutes is the cooldown for NPCs, which translates exactly to 24 in-game hours if you are using that version while timescale is 10, therefore matching my ideal balancing. Use whatever version you want though, including the no-cooldown option if you like, and the mod will work fine regardless.

There is an optional file called "No RelationshipRank limit" that lets you go beyond relationshiprank 2 and -2 using compliments and insults, boosting the max to 4 and -4. Use this file if you like.

You still gain speech xp for complimenting or insulting an NPC as long as they're not on cooldown for compliments or insults respectively, regardless of whether the speech check succeeds or fails or whether you are on compliment cooldown. Do with that as you please.

Installation:

• Compliments and Insults is required.
• Download the main file you want.
• Download the optional file if you want cheats.
• Install as a normal mod; goes into data folder.
  

Ask questions, report bugs, and make requests as you please and I might answer.