It's not those actions but if you did all the restaurant you might have missed the almost sex scene with Maya which I think might be required, but those actions could have raised your Dik affinity score also and they won't accept if you have Dik affinity.
No, you lose them if you have DIK Affinity but not if you have Neutral or CHICK Affinity, and you also need to have had sex (or almost sex) with one or both of them.
Supporting Chad isn't a affinity choice. You must have neutral/Chick affinity in the library scene with Josy and Maya. If you have fought Caleb or punched Tybalt after, you simply have changed your affinity to Dik.
It is not possible to get Maya and Josy with DIK affinity, it simply isn't. The walkthrough tells you this twice.
Ok I got it. Thanks!
If you don't have DIK affinity in ep 5 then it locks you out of that fight, but you can still punch Tybalt and that can push you in to DIK affinity if you're 1 major DIK choice away from that, which, when it comes to M&J, doesn't make sense when you think about it.
But then, if you keep the Neutral affinity and are accepted by them, you can punch Tybalt, get DIK Affinity, but they'll still be with the MC and won't dump him even though he's now changed to the affinity they apparently don't like. 
Maybe it was intentionally designed that way to make it kind of like a 'most rewarding path'? Because that's the feeling I'm getting from the scenes and writing. (Personal opinion: As awesome as Jade and Cathy are, they can't compete with Maya and Josy's sweetness). It's probably fair a full on dik character wouldn't gel so smoothly with them but a middling dik-neutral character seems fair - especially if you consider that they've (Maya and Josy) been progressing towards taking things slowly and seem more accepting of the MC dating other girls as well as compared to in earlier episodes when commitment might have been a much bigger issue.If you don't have DIK affinity in ep 5 then it locks you out of that fight, but you can still punch Tybalt and that can push you in to DIK affinity if you're 1 major DIK choice away from that, which, when it comes to M&J, doesn't make sense when you think about it.
Someone can have Neutral Affinity before the library scene, then smoke weed with Quinn, and it pushes them into DIK Affinity which causes M&J to reject the MC, yet mere minutes before that they wouldn't have.
This is why they Affinity system is broken and often doesn't make any sense.
Hang on, is the Caleb fight really locked to DIK affinity? I know it requires you to have fought the Jocks in Episode 2 (which is a major DIK choice), but I thought that was the only requirement.If you don't have DIK affinity in ep 5 then it locks you out of that fight, but you can still punch Tybalt and that can push you in to DIK affinity if you're 1 major DIK choice away from that, which, when it comes to M&J, doesn't make sense when you think about it.
Someone can have Neutral Affinity before the library scene, then smoke weed with Quinn, and it pushes them into DIK Affinity which causes M&J to reject the MC, yet mere minutes before that they wouldn't have.
This is why they Affinity system is broken and often doesn't make any sense.
Actually, yeah, I think it's just the fight with the Jocks, not the Affinity. But the point about how the Affinity can change to the one M&J apparently don't like when you're with them still stands.
Then what is all of that "I forgive you" innerlog she has???
to be fair i'm not gonna say the word "hate", it just feel so bad being betrayed like that.
Really? Do you also complain in shooter games when the player's health increases instantly after taking meds?
i'm not gonna agree on how you described rusty, sure when he was a freshman (in the flashback that we've seen) he was arrogant and entitled, but right now in the DIK i feel like he's one of the nicest guy there, he's also humble now, never bragged about how the dik mansion is all his money yada yada.
