The only thing Quran demands is justice and fulfilment of the rights of the spouse, there is no compulsion for emotional attachment at all times and at all costs. Quran acknowledges scenarios where one spouse may not like the other with their heart, but as long as no transgressions are committed, there is no blame on the person:
یٰۤاَیُّہَا الَّذِیۡنَ اٰمَنُوۡا لَا یَحِلُّ لَکُمۡ اَنۡ تَرِثُوا النِّسَآءَ کَرۡہًا ؕ وَ لَا تَعۡضُلُوۡہُنَّ لِتَذۡہَبُوۡا بِبَعۡضِ مَاۤ اٰتَیۡتُمُوۡہُنَّ اِلَّاۤ اَنۡ یَّاۡتِیۡنَ بِفَاحِشَۃٍ مُّبَیِّنَۃٍ ۚ وَ عَاشِرُوۡہُنَّ بِالۡمَعۡرُوۡفِ ۚ فَاِنۡ کَرِہۡتُمُوۡہُنَّ فَعَسٰۤی اَنۡ تَکۡرَہُوۡا شَیۡئًا وَّ یَجۡعَلَ اللّٰہُ فِیۡہِ خَیۡرًا کَثِیۡرًا
Believers! You are forbidden to forcibly inherit women. Nor by treating them with harshness should you take away part of what you have given them – except where they have been guilty of open lewdness; and live with them befittingly. Because if you dislike them, it may be that you dislike a thing and Allah brings about through it a great deal of good. (Quran 4:19)
And while defining justice in the context of polygamy:
وَلَنْ تَسْتَطِيعُوا أَنْ تَعْدِلُوا بَيْنَ النِّسَاءِ وَلَوْ حَرَصْتُمْ فَلَا تَمِيلُوا كُلَّ الْمَيْلِ فَتَذَرُوهَا كَالْمُعَلَّقَةِ وَإِنْ تُصْلِحُوا وَتَتَّقُوا فَإِنَّ اللَّهَ كَانَ غَفُورًا رَحِيمًا وَإِنْ يَتَفَرَّقَا يُغْنِ اللَّهُ كُلًّا مِنْ سَعَتِهِ وَكَانَ اللَّهُ وَاسِعًا حَكِيمًا
And even if it is your ardent desire, you will never be able to be totally just between women; so it is enough if you do not completely incline yourself to a woman altogether, so as to leave the other aside. And if you come to a friendly understanding, and fear Allah; Allah is Oft-Forgiving, Most Merciful. But if they disagree and [eventually] must part, Allah will provide abundance for each from His bounty. And He is Bountiful and Wise. (Quran 4:129-130)