I’m confused

No, oscar js said carcel and ines didn't remember each other, which means carcel and ines were married and loved each other. Ines doesn't remember for some reason. Second one is where oscar abuses her..(cut his pp please) and she remembers. third one was with emiliano. Emiliano remembers her and she does too..(painful) and now the fourht back to carcel.. and luciano(my husband) doesn't seem to remember either just like carcel.. but oscar seems to remember all four cycles. (Small spoiler. He was killed everytime by Luciano and Carcel a brutal death. Luciano the man you are to avenge your sister

Nopeee, there was a real first timeline where Ines and Carcel were married. Ines didnt remember that cause she died due to sickness. The second was where she married the prince, she unalived herself so in the next timeline she remembered only the previous timeline. The third timeline she unalived herself again making her remembered only the 2nd and 3rd. Now this is era is the 4th timeline.

As revealed in this chapter, there was another timeline.

1st: Ines chose Carcel
2nd: Ines chose Oscar
3rd: Ines chose Emiliano
4th: Ines chose Carcel

The current timeline is the fourth and last timeline.

Wait then why did Ines go back but without memories after the first timeline?

Because Ines:

1st TL: didn’t make wishes for memories after her unfated death
2nd TL: committed suicide and punished with memories
3rd TL: committed suicide and punished with memories
4th TL: still alive

Dam? All that coz she didn't make a wish???

She made wishes but not for memories. That’s why Oscar told Carcel in this chapter that her made the smart choice unlike Ines and Carcel.

Thank you yall! The last two chapters were quite confusing for me so this helps so much.
So only Oscar remembered all those timelines?

Yes. Only Oscar remembers all timelines. Here’s why:

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1st life: after unfated death, he cleverly used his wishes to keep his memories from first timeline so he can exact revenge on the Valeztenas who deposed him as a tyrannical crown prince by rallying the country.

2nd life: committed suicide after Luciano was torturing him every day after Ines committed suicide

3rd life: committed suicide to follow Ines. He knew suicide would let him keep regressed memories from the third life.

4th life: biding his time to get Ines. He thinks he has the advantage because he remembers all lives. He even attempts to kill certain other characters as though their lives has no value because they’re just a shell reliving the repeated lives (in Oscar’s view)

How did Oscar know about the curse to take advantage of that?

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He knows both ways of getting memories.

1. Because he used his wishes after his death in the first life to remember his first life in his second life. - Method of Wishes

2. After he committed suicide in the second life, he naturally woke up with memories at a certain point in the third life - Method of Suicide

So from the third life, he knows there are two ways to get memories. So he commits suicide in 3rd life to follow Ines to fourth life with memories.