Busy

He didn't mean to forget.

At first, he thought his lover was trying to get out of something since thats what a probing Irvine meant but the disappointment at his answer of 'being busy' and how he didn't want to be disturbed haunted him throughout the day.

Later, when an enraged yellow whirlwind came in and informed him of the true cause of Irvine's disappointment, Squall could only stare shamefaced at small vibrating SEED in front of him.

As the clocked chimed announcing the end of another day, all Squall could bitterly think that is was a truly 'Happy Anniversary'.