Maybe he feelt the bad atmosophere between us, because today he prepared a surprise for me——two tickets for a play.

We don't double up em dashes (the long one). Sometimes people will double up hyphens (--) when typing on a computer to simulate an em dash, or just use a regular hyphen instead if it it's too difficult to type am em dash.

Also it's worth mentioning that em dashes have started to be seen as a "AI" thing as AI always uses them while most people don't bother, so that has hurt their popularity recently.

Then he took me to see the play on this Satureday.

Then we become goodmade up again.

"made up" is the phrase usually used for this kind of reconciliation.

I argued with my husband last week because he didn't prepare a gift for my birthday.

Maybe he feel the bad atmosophere between us, because he prepared a surprise for me——two tickets for a play.

- Minor spelling mistake with "atmosphere"
- Use "because" when writing about a cause and reason

Then he took me to see the play on this Satureday.

- You can use either "on Saturday" or "this Saturday", but preferably don't use both
- Minor spelling mistake with "Saturday"

Maybe he feelt the bad atmosohere between us, but he prepared a surprise for me——two tickets for a play.

Must be in pst tense since rest of the story is in past tense.
Maybe… but conjunction needed (FANBOYS connecting two indpendent clauses)

Then he took me to see the play on this Satureday.

No need for on since the word this is already there for the date

Then we become goodwere on good terms again.

We became good again implies moral good not good relationship. I changed it so it fits the context