My Useless Husband

A few weeks back, Kenzie Taylor, Marcelo's wife, informed him she was jetting off to London for some downtime at a wellness retreat, and they initially decided he wouldn't tag along. Since everyone needs some space, Marcelo respected her wishes. It hit him hard, though, upon her return when she brought along a rowdy charmer she had evidently been intimate with across London on his dime.
Additionally, to spice things up, she invited the hunky fellow to their abode, instructing him to have steamy intercourse with her while Marcelo looked on. The guy, a lack interested in sports deemed "unimpressive" in the bedroom, found himself ridiculed. Kenzie's continuous wicked behavior left him halted.
What's the motivation behind her hurtful actions? Simply put—she wields the power.