Don't feel guilty about manipulating women: they do it to you already
Theory: it is perfectly fine to manipulate women
Summary: women are going to manipulate you in a relationship regardless of what you do, sometimes even unintentionally. Men who wring their hands or call other men monsters because they are playing with a woman's emotions are failing to understand the fundamental dynamics of a woman to man interaction.
Lesson 1: When entering into a sexual relationship with a man, a woman first evaluates the partner in a Machiavellian way, completely unintentionally. Her first thought is: What can I get from him? This is thought often in hamster terms, often she will postulate as to what he does, how much me might make, if he's a 'good guy' (pushover). This does not suggest that women are conniving by nature, but a woman will not enter into a sexual relationship that she does not gain anything from. A woman will not have sex with a beta male unless she first gains something. As well as that, the woman gains something by having sex with an alpha male; his company, protection, and biologically the access to highly desirable genes for her offspring (which is a component of all organisms way of going about things, even if we don't realize it). As such, the idea of 'love' as a sort of nebulous, greater than our biological urges concept is foolish. A woman falls in 'love' when she meets and fucks a man who is better than anything she feels she can ever hope to get. She believes that she has found 'the one'. She falls out of love when he demonstrates traits and behaviors that show her she may be able to find better options.
Lesson 2: With that in mind, your interactions with women are framed around a sort of 'game' of give-and-take. As you pass the shit tests, which are her way of determining if you are indeed all you appear at first glance, she realizes that she can gain something from you, and if you act on her opportunity she presents, you win the game and get the girl. Manipulation isn't a choice, it is going to happen regardless. A better word would be to 'influence.' The woman will influence a man, particularly a beta, when she sees something that she needs for survival. Beta bucks exist because a woman needs financial security, particularly when she does not have the means to support herself on her own. An alpha would be less willing to offer up such means in a short span of time, especially not without great sacrifice on the part of the woman. A woman can play her cards right and get the thing she wants out of beta men with very little investment. Some women in the internet age have even made money without having sex or even doing professional modeling, the concept of the 'e-whore' is an example of that, a woman using her sexuality online in order to get her the resources she needs to survive.
Lesson 3: This doesn't mean you need to eschew your morality. While some concepts of basic Christianity are cucked, The Bible often talks about the need for a man to assert control over his women. Men who didn't, for example, King Ahab, his son-in-law King Jehoram, were often doomed by them. As the book of 1 Peter says:
Likewise, wives, be subject to your own husbands, so that even if some do not obey the word, they may be won without a word by the conduct of their wives, when they see your respectful and pure conduct. Do not let your adorning be external—the braiding of hair and the putting on of gold jewelry, or the clothing you wear— but let your adorning be the hidden person of the heart with the imperishable beauty of a gentle and quiet spirit, which in God's sight is very precious. For this is how the holy women who hoped in God used to adorn themselves, by submitting to their own husbands, ...
The role of the women in a Biblical context is to submit to her husband. You may feel that such manipulation is ungodly, but if you don't do it she will rebel and likely cause you more harm, which would disrupt the family your God wants you to create.
As for Islam, as GLO said, they are right about women. This is not an endorsement of Islam, or an endorsement of Christianity, but merely a way to dispel most men's refusal to 'play the game' that is being played whether they like it or not.
Conclusion: whatever moral code you think you have, disregard it at first. When you start off on your journey, leave your oldself at the door. Manipulation often isn't even really what we call manipulation, but just influencing people that you meet along the way