Something small based on a video I found.

"Lyn? Are you in here?" Hector called out as he walked into the green haired girl's tent. "Odd. She isn't here... She told me she wanted to have a sparring match today... Wonder where she went?" Then something caught his eye. A worn notebook just sitting out in the open, open to some page, as if ink was drying. The page looked fairly recent but the ink wasn't wet. Then he actually noticed the contents of it.

"Lyn... I know that this war has been taking a toll on us... But I have something to ask you." He blushed and pulled out a giant diamond studded ring out and got on one knee "Will you be my waifu?"
"Of course! We're going to get married and have wonderful children!" I replied, jumping into his manly man arms.

At that moment, he couldn't read anymore.... This had to be a joke, this was nothing like his companion, but it was. It was clearly her handwriting. He didn't want to question her but did at the same time. All he wanted to do at that point was forget this all ever happened.

Wtf did I write for the diary? I feel so ashamed.