Man that's bad, if you add people and you don't get added back then it glitches one of your 100 spots. I know this especially as my Goldie account is glitched and full. Confirm which of my accounts you added by trying to add the friend code again, i can't add you back on goldye unless I can find someone to delete but my two other accounts have space...... but I never play on them though You can always delete them once i've added you back.
The system for adding people on this game suX !!!!!!!!!!