Could it be one of these? ~Lynne

Barking Up The Wrong Bakery by maanorchidee

Kurt is the biggest dog party planner in Los Angeles. When his usual dog bakery cancels on Kurt, he’s in the dire need of a last minute replacement. Luckily, he comes across the Dalton Doggy dog bakery, which is run by Blaine and Cooper Anderson. Cooper’s a mess, but Blaine manages to charm Kurt. Will Kurt be able to keep it professional?

~~~~~

If I Knew you were Coming I’d Have Baked a Cake by practicalamanda

The Anderson’s PA

Author: Inkinmyheartandonthepage

Summary:

Au: Kurt Hummel is PA to the very successful lawyer Cooper Anderson. He's also very much in love with Cooper's brother Blaine, but neither brother has any idea and Kurt intends to keep it that way. KLAINE! Rated T for safety :  please R&R

Rating: Teen&Up Audiences

Words: 68,661

Chapters: 46/46

I hope you enjoy. ~Lynne

Until Further Notice series by @fictionallylost

Money can’t buy happiness. Businessman Kurt is still trying to figure that one out, and performer Blaine thought he knew what he wanted, until he came across a Personal Assistant Ad. A story of acceptance and love, from one’s self and that of others, more specifically, one other.

~~~~~

You Can’t Always Get What You Want by aslongastherearestarsaboveyou

These aren't tropes I normally read. Could it possibly be this one? - HKVoyage

One in a Million by NotAPrettyLady

Author:  AlexaCardew

Rating:  T

Status:  Completed in March 2016

Word Count:  64,353

Summary:   In 2009, recent college graduate Kurt Hummel takes a job as talent agent Ari Gold’s assistant and is asked to pretend date Blaine Anderson to help with the actor’s coming out. All hell breaks lose when a jealous co-star and the media get involved.

Tropes/Genre:  AU, famous!Blaine, personal assistant!Kurt, fake relationship, closeted!Blaine

Lynne’s review:  This is really cute. There’s a dash of everything here, fluff, angst, romance, humor, jealousy, slimy Sebastian and more. I quite liked it a lot.

You Can't Always Get What You Want by aslongastherearestarsaboveyou

Just out of Fashion College, Kurt takes a job as a PA to famous musician, Blaine Anderson. Kurt is unprepared for how difficult working for Blaine is, especially as his attraction to him grows. Klaine AU, slight Badboy!Blaine

~~~~~

Senator Blaine AU by luthien82

This is the ongoing tale of Blaine Anderson, reigning Ohio Senator, and his PA Kurt Hummel, on whom he has a massive crush. Read about their growing friendship that evolves into something more as time goes by, seeing them through laughter, tears, hard decisions and compromise. In short: life. This series is Blaine-centric.

~~~~~

It Takes Two by AlexaCardew

In 2009, recent college graduate Kurt Hummel takes a job as talent agent Ari Gold’s assistant and is asked to pretend date Blaine Anderson to help with the actor’s coming out. All hell breaks lose when a jealous co-star and the media get involved.

~~~~~

To Live in the Shadow by icedintheveins

Blaine is an A-list movie star being destroyed by fame. Kurt is hired as his stylist. Over time, these two begin to heal each other, but not without a good amount of obstacles. 

~~~~~

The Anderson’s PA by inkinmyheartandonthepage 

Au: Kurt Hummel is PA to the very successful lawyer Cooper Anderson. He’s also very much in love with Cooper’s brother Blaine, but neither brother has any idea and Kurt intends to keep it that way. KLAINE! Rated T for safety : please R&R

~~~~~

Money Doesn’t Buy Happiness by Itsaklainething

When Kurt meets his idol Blaine Anderson, he didn’t expect to him to stick up for him after being harassed in the line, he also didn’t think that he would leave feeling humiliated. But when Blaine bangs into him in the street the next day and gives him his number feelings start to develop, but Blaine’s straight right? Or is this what his manager wants people to think? Famous!Blaine

These are the two fics I’m aware of where Blaine is a singer/musician and Kurt is his personal assistant. If it’s not one of these, perhaps the readers know the fic you’re looking for?  ~Lynne

Money Doesn’t Buy Happiness by  Itsaklainething

When Kurt meets his idol Blaine Anderson, he didn’t expect to him to stick up for him after being harassed in the line, he also didn’t think that he would leave feeling humiliated. But when Blaine bangs into him in the street the next day and gives him his number feelings start to develop, but Blaine’s straight right? Or is this what his manager wants people to think? Famous!Blaine

~~~~~

You Can’t Always Get What You Want by aslongastherearestarsaboveyou

There are so many of these! Here are a few that are my favorite. You might also want to check out the Klaine Advent collections on AO3. Here is the one for 2018. - HKVoyage

What I Need by holdingdaylight

Blaine needs a lot of things. The one thing he can't have is Kurt.

Note: Also check out the author’s Heartstrings Verse 

~~~~~

Senator Blaine AU by luthien82

This is the ongoing tale of Blaine Anderson, reigning Ohio Senator, and his PA Kurt Hummel, on whom he has a massive crush. Read about their growing friendship that evolves into something more as time goes by, seeing them through laughter, tears, hard decisions and compromise. In short: life. This series is Blaine-centric.

~~~~~

Hearing Verse by adiwriting

Blaine’s been Deaf his entire life and never once has he considered dating a hearing person, but Kurt’s different.

~~~~~

A Life in a Year by @darriness

Formally titled Fic A Day 2018. I wrote 365 fics (one a day) based on a word that was randomly generated every day.

~~~~~

Daddies Klaine series by @lady-divine-writes

Note: There are currently 36 one-shots in this verse.

~~~~~

Forevermore by lostinfictionalworlds