Does Felix know

He don't even know Isaac is an omega

He doesn't know, he will discover Isaac is an omega near to the end of this novel

Or he knows he is an omega? I don't remember(╯°Д °)╯╧╧

Pls spoil me do they have a big fall out or

Thank you so much for the clarifications. So Felix just know that Isaac is one of the soldiers there that escape alone. He still think that he is a beta and he doesn't know that Benjamin is his child?

He doesn't know
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Cole bit Isaac since he is a shit alpha, Felix find both fighting and start fighting Cole but stops since it can harm Isaac since he is under process of marking (I'm not sure, since I read the novel a long time ago) anyway, Cole run away, Isaac and Felix start talking, Isaac FINALLY confess to Felix he is an omega and Felix is a bit angry, because if Isaac told him before he was an omega he would mark him ages ago, he really believed he was a beta. I guess, after the biting, Isaac request to Felix save Benjamin from Cole, since Benjamin is his son. Felix is totally surprised by this too.

So, yes, he doesn't know til the end of the novel about Isaac and Benjamin True story.

And sorry for my bad English, I just realized I used too much since and in a wrong way hahaha

oh I’m sorry did you mean that I need to wait that long for him to know that benjamin is his son ahhh I thought he will know it sooner and have fluff moments with his son benjamin

You will need to wait a bit for fluffy moment between father and son. It happens almost to the end of this novel, it's not that far I guess....

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Cole bit Isaac since he is a shit alpha, Felix find both fighting and start fighting Cole but stops because it can harm Isaac since he is under process of marking (I'm not sure, I read the novel a long time ago) anyway, Cole run away, Isaac and Felix start talking, Isaac FINALLY confess to Felix he is an omega and Felix is a bit angry, because if Isaac told him before he was an omega he would mark him ages ago, he really believed he was a beta. Felix bit Isaac to try to save him, I guess, after the biting, Isaac requests Felix to save Benjamin from Cole, since Benjamin is his son. Felix is totally surprised by this too.

So, yes, he doesn't know til the end of the novel about Isaac and Benjamin True story.

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I just want to clarify does cole have special feelings to Issac? because I read in some of the spoilers that cole tried to rape isaac or he just what Issac because he is strong or something?

As I remember from novel, no, cole is just an assh*le that wants power from every resource he can get.
He did it to Isaac's father and he was going to do the same on Isaac.
I really wanted him dead, in the worst way