Something about Finn's acting tells me he didn't know how Mike was feeling about El mostly of s4 and s5. That's why his acting with Millie is kind of off most of the time.
But if you see, in episode 8, he finally acts in one determined direction towards Millie, and his lines are delivered in a better way. Now I know it was because the scripts weren't ready, he didn't f*cking know until last minute what was going on in Mike's head according to the writers.
He had his own idea, or kind of. Now, compare that with how he acted with Noah. It had more intention and the dialogues were delivered with more confidence. He knew what he was doing most of the time.
I don't know if it was because Mike is naturally caring with Will, or he indeed thought Mike was in love with Will too. I go a little more to the second one, because of the field scene and the consistent eye acting. Also the fact that he didn't need a CGI to cry in the coming out scene.
God, Finn got Mike so well. It's so sad.















