They haven't done anything aside of that sharing scene when visiting Igor and Kateryna. OP just wrote the sentence wrong, which for some reason is so common with Igor's fans. He should have written ¨And hopefully at that date, Zahra will finally have sex with Igor¨.
Though I'm more interested in banging Savana. We have given Igor courtesy enough by him having fun with Ain, Emilia and Kat. It's time he show us why we are best friends, and there isn't a better way that letting us bang his girlfriend.