Yeah, fun fact is that there were several studies on body odour and relationships.
Firstly it's been reported that, similar or familiar natural body odour couples "click" faster and steadily forming a stronger relationship.
Secondly, your significant other can tell changes in mood including problems in relationship, although here it's obviously (although also both reasons) semen that Megu isn't familiar with, yet.
Lastly, interesting fact is after a breakup ex partner odour may "stink" to the ex, not correlated with reason of the breakup psychologically per say.
Yeah, right, just that seeing her masturbating sent you to wanking marathon.