Awesome, I was able to change to the love source and give myself 999, nice and easy now. What is the 010 editing thread you speak of however? I did a search and couldn't find it. I'm interested in what scripts are available.You can use the script given by type 0 dev on the 010 editing thread. It's the max blade stats one. Just remove every Stat modifier aside from trust and apply the script.
As for love potion, just check the item ID on the table on the first page and edit one item you already have into that ID, it will change to the love potion.