Zainab disowned Syed (Marc Elliott) after he embarked on a relationship with Christian Clarke (John Partridge) in summer 2010, and the pair have only recently begun getting back on better terms.
The situation in the Masood family will take new twists next month when Syed's estranged wife Amira (Preeya Kalidas) returns to Albert Square with their baby daughter.
Wadia told the Daily Star of the Masoods' future: "I'm hoping things will hot up with Yusef and Zainab. I'm excited to see what will happen with that love triangle.
"And I can't wait for Syed's baby to come. I think it will help Zainab and Syed get closer as she'll want her grandchild and it may make her feel like her son is a proper man."
Zainab and Yusef's storyline takes a darker turn later this week when the scheming GP crushes up pills into her food, causing her to lose consciousness.
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> EastEnders' Preeya Kalidas reveals Amira return secrets
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> Read more EastEnders spoilers and news
Watch Zainab's EastEnders character trail below: