Q. Not falling in love with partner due to non-muslim ( religion )?

That's an interesting question you've put up. I was reminded during my reading in a book ( which I can't remember). Some muslim critic writing degratory stuff about Islam about this issue and quotinf verses regarding muslim marriage.
Some common ones are quoted, for example in AL Baqarah 2:221, An-Nisa 4:24,4:34. Usual argumens are muslim women are oppressed or the men are given rights to dominate/abuse women etc...A good example is as below "Quranic reference" by one particular anti-Islam claim;

"... A slave woman who believes is better than an unbelieving woman, even though she allures you..."(Quran 2:221)
and
"A man slave who believes is better than an unbeliever, even though he allures you..."(Quran 2:221)

This is a common reference to which some 'professionals' emphasized that Muslim women are oppresed. Yet in the same the verse, the Quran firstly stated,"Do not marry the unbelieving women (idolators) till they have believed. A slave women who believes...". The Quran is innocent in the face of life where any men/women falling in love with whosoever they are from, which no blame is put upon the issue. The concern/plea emphasized in the verse is to reflect the state of life as the couple will be once they got married.Examples are the consequences of the two different religious practice, rights and belief in two during marriage. How about the children, how will they face the challenge as they ponder on their beliefs? Ignorance and selfishness of love is certainly not an answer to long term situations all the time....

Hence, the plea is on best interest in marriage+faith in for both men and women. This was concluded from the last part of the verse when it says,"..Unbelievers do (but) beckon you to the Fire. But Allah beckons by His Grace to the Garden (of bliss) and forgiveness, and makes His Signs clear to mankind: That they may celebrate His praise..". It's a honest answerin faith, and if not, our religion COULD instead may be accused of 'double-standards' for women in marriage, (God-forbid!). Other Quranic verse that give rights to non-muslim from unfair treatment can also be found on verses such as 4:19,60:10,

For some personal reflection, I somehow realized the (deliberate/undeliberate) absence of Muslim women's voice in the public media and information among Muslim+non Muslim community makes anti-Muslim propoganda against women's rights seemed too much advantage/distressing and the this 'results' unfortunately are too convincing for non-muslims who are unknown to Islam. I feel worried, as Jeffrey Lang had expressed in his visit/speech in Singapore; Muslim women are generally/if not somehow, de-represented in the Muslim community. I hope that both the Muslim brothers and sisters could work together to defend our cause for religious's beliefs and reasons :)

"The Believers, men and women, are protectors one of another: they enjoin what is just, and forbid what is evil: they observe regular prayers, practise regular charity, and obey Allah and His Messenger. On them will Allah pour His mercy: for Allah is Exalted in power, Wise." (At Tawbah 9:71)