Women are emotional. It's true. Husbands may not like this and our priests may not understand this, but you can't just say to us "You owe me my debt." This is a sure way to grow bitterness in a woman's heart. No matter how true it is that as spouses we owe each other our marriage debt, this doesn't really mean much at midnight when she has to get up at 5 to start her days work.
What you're trying to say is that women are MORE emotional than men. Men have emotions also. But here's the newsflash. Love is not an emotion or an emotional state. Love, for human beings, involves primarily the intellect and the will ... not subject to the vicissitudes of emotions. Love is not primarily emotion. Women in particular have a difficult time with this concept. Emotions go up and down due to various physiological factors ... most notably hormones. In addition, Catholics are expected to act out of SUPERNATURAL love, aka charity.
Consequently, just because a woman doesn't FEEL like it, she is not dispensed from meeting her obligations out of love and supernatural charity. And she should be generous in doing so. If she turns "bitter" when being reminded of her obligation in justice and charity to her husband, then she is not in a good place either with God or with her husband. She completely lacks GENEROSITY in her charity and love and seeks only the self-gratification of emotion.
You see, the saints also went through this in the spiritual life. God allowed them to be deprived of the emotional gratification they received from loving Him so that they could learn to love Him more and more selflessly ... and not just because it pleased them. Thus they learned how to seek not their own personal gratification but God Himself for His sake, because it pleases HIM, rather than themselves. These are the so-called "dark nights" of the spiritual life.
So it's not about man vs. woman but about human beings, especially Catholics, vs. animals.
Nor is this kind of love "cold", but often after these saints passed through these dark nights, the love they found on the other side was incredibly ardent and like burning fire.
Otherwise, you leave "love" to the vicissitudes of your own personal gratification.
Who cares whether it's midnight or 5 AM? In fact, sometimes God calls upon us to meet our obligations even if it entails an almost heroic exertion of will.
In the case of my relationship with my wife, I am a morning person and am much more alert in the morning. She on the other hand can't wake up in the morning but is wide awake at night. But we often accommodate one another in the "opposite" time window when we don't necessarily "feel" like it. We do it out of generosity towards one another, and that's a deeper love than doing it because it pleases us. If we only do it to please ourselves, we just love ourselves and not our spouse.
And that's the entire journey of our lives. Do we seek primarily ourselves or primarily others, and God above all things.
So if this causes "bitterness", then you need to re-evaluated your relationship with God.
And this holds for all our other emotions as well. If I'm feeling grumpy or tired, this does not permit me to treat others badly as a result. Men often joke about the women who treat their family like garbage because of their PMS. Again, newsflash. These physiological and emotional states do not give you license to act this way. Your obligations of charity do not cease. Yes, the guilt might be mitigated, but the obligations remain. Even if you're not in the best of spirits, you can still TREAT people kindly and with respect ... through an exertion of your will. Yes, for a woman, that might entail an almost heroic exertion during times like that. But God calls you to that, and obliges it. Similarly, for men, sometimes they can get irritated and have temper issues (also due to hormones) ... but that too does not give them license to treat others badly. Men would are denounced as bullies if they act like this, but we're supposed to chuckle when women do the same. Do you like being treated like amusing little children who can't control themselves or do you want to be held to the same spiritually-virile standards as men? You keep trying to fool yourselves that various emotional states justify certain behaviors.