In the May 12 episode of the primetime series, Monica finally decides to temporarily live apart from Adrian after feeling consumed by her anger and paranoia over her husband's affair, despite him ending it and promising his loyalty.
Adrian rejects the idea, but Monica is adamant that their separation will give them a chance of fixing their relationship in the long run.
Meanwhile, Nicole is shocked at the discovery that she is pregnant with Adrian's child, and is left confused whether to tell him of her condition.
As the scenes aired on Monday, "The Legal Wife" dominated conversations on Twitter, with "Monica to Adrian" becoming a worldwide trend on the micro-blogging site at one point.
Aside from being a consistent trend online, "The Legal Wife" has also garnered stronger viewership with the unfolding of the clash between Monica and Nicole.
In April, "The Legal Wife" ranked 6th as the overall most watched program in the Philippines with an average nationwide rating of 23.5%, according to market research group Kantar Media.
"The Legal Wife," which is under the direction of Rory Quintos and Dado Lumibao, airs weeknights after "Ikaw Lamang" during ABS-CBN's primetime block.