Doki Doki Literature Club - Monika by siun

Based on her expression, it looks like she's several years into the marriage with [Player], doing this more out of a sense of routine than a sense of passion--or alternatively, doing it as a somewhat cynical, mildly horny attempt to make [Player] look twice for a "Fuck" option on the dialogue tree.

Overall, it's a harsh lesson to learn from falling in love with a NEET with fried dopamine receptors…

And yes, I am definitely reading too much into this. Reading between the lines is the lifeblood of fandom autism!