IOS 6 - Change names in Contacts, won't reflect on text msg

Question

Is anyone else having this problem since updating? I change friends names in my Contacts to how I want them to appear, but my phone refuses to show them that way on text messages conversation for only a handful of people. For example, I have a friend I changed from "Michael" to "Mike" in my contacts, but then no matter what I do, he always shows up as "Michael" on our text messages. While on the other hand, I changed "Andrew" to "Andy" and he shows up correct in my text messages with no problem. It's hit or miss...
This is MOST irritating because my own fiance's name is wrong!! And I can't fix it! I keep changing it to the way I had it before I updated, "(heart symbol)Wes" but it automatically changes it to "Wes Jr Last Name", presumably because it linked to Facebook, but that's not even the way his Facebook name is (which is accurate -- Wes Last Name, Jr.".
It's in my Contacts the way I want it, but it just WILL NOT change on our text messages. It's driving me crazy!
I really do like that it synced with Facebook, but if it's going to mess up all of my contacts, it's just not worth it. Could I turn it OFF now? Or is it permanent?
Help!!!

Answer 1

I have the solution for this, so please full attention here to get it correctly. I found the steps from the iOS 6 manual.
Link a contact: Edit a contact, tap Edit, then tap  and choose the contact entry to link to.
Linked contacts aren’t merged. If you change or add information in a unified contact, the
changes are copied to each source account where that information already exists.
If you link contacts with different first or last names, the names on the individual cards won’t
change, but only one name appears on the unified card. To choose which name appears when
you view the unified card, tap the linked card with the name you prefer, then tap Use This Name
For Unified Card.
View contact information from a source account: Tap one of the source accounts.
Unlink a contact: Tap Edit, tap  , then tap Unlink
First Step: Edit contacts
Second Step: Scroll down & Click + symbol
Third Step: Click linked contacts (choose your contact that you want to be linked if the contact you are in)
Fourth Step: Click done
Fifth Step: Go to LINKED CONTACTS
Sixth Step: Choose your prefer name ex. Facebook: Taylor Rocker
                                                                    iCould: Taylor Swift
Seven Step: EXAMPLE: I choose iCould to be my prefer name.
                     Click on iCould: Taylor Swift
                    There will be a new button appear which is "Use This Name For Unified Card"
                     FYI: IF FACEBOOK NAME AND ICOULD NAME ARE THE SAME OR A BIT DIFFERENT, YOU CANNOT CHOOSE WHICH NAME YOU WANT TO BE APPEAR.