Waaaait....there's a guide for this? Dude, please send me! Sometimes i forgot to check the friendship bar and then it's all very, very low. I had to restart season 2 a couple times because of this. lol
https://www.worldanvil.com/w/book-of-the-damned-13leagues
Just go to guides, and pick which season you want. Then at the bottom are links to specific character or personality...etc guides.
Luckily the bar is less friendship/hate and more rival/friendship. Syd and I have a healthy rival relationship. We poke at each other, argue, and got each others backs. I consider her a friend...just a...well...rivalry type friend. xD