just to add on what you said a little as well, and >>>181644955
what anon said here since Eren didn't want Armin to join the Survey Corps, and at the same time revenge took priority though eh never completely forgot about his dream, he was thrown into an imbalance between the two
But even better is around chapter 72 where >Eren admits that he felt jealous of Mikasa, yet possibly held more contempt than he chose to speak out about.
And then a big problem is how >both Armin and Mikasa thought they understood Eren when Mikasa couldn't even understand the dream either Eren and Armin had <
But then of course, >Armin didn't understand him either since Eren's dream was never to reach the ocean or see the outside world, it was to seek the freedom which was beyond it, something which he realised was impossible since there would always be more enemies in the way
After that, it was how Armin and Mikasa began wanting peace, while Eren was trying to look out for them all, and Historia especially admittedly due to the circumstances that just kept dragging their thoughts away
Honestly, we still haven't seen the full extent of their conflict in he flashbacks but hopefully we'll see it in this chapter