All this I'm going to apply to "in the bedroom" kink, because that's the only kind I know anything about. How to apply it to a relationship with power exchange, I don't presume to say.
1 Cor 7:3-5, NIV (in context)
3 The husband should fulfill his marital duty to his wife, and likewise the wife to her husband. 4 The wife does not have authority over her own body but yields it to her husband. In the same way, the husband does not have authority over his own body but yields it to his wife. 5 Do not deprive each other except perhaps by mutual consent and for a time, so that you may devote yourselves to prayer. Then come together again so that Satan will not tempt you because of your lack of self-control.This passage seems to have kink implications as well as implications for sexual frequency. The way I read it, it implies that both the husband and wife should strive to fulfill the other's kinks and their desired sexual frequency; they yield authority over their own bodies. But, on the other hand, neither the husband nor the wife may demand it of the other (except of course where the demand is itself part of the consensual relationship). The possessor of the body yields it, the spouse may not make the partner feel bad by pushing for it. Especially in light of Ephesians 5:28-30 (in context)
28 In this same way, husbands ought to love their wives as their own bodies. He who loves his wife loves himself. 29 After all, no one ever hated their own body, but they feed and care for their body, just as Christ does the church- 30 for we are members of his body.And, of course, in light of Matthew 22:37-40 (in context) and all the other myriad passages about love:
37 Jesus replied: "'Love the Lord your God with all your heart and with all your soul and with all your mind.' 38 This is the first and greatest commandment. 39 And the second is like it: 'Love your neighbor as yourself.' 40 All the Law and the Prophets hang on these two commandments."To a Christian, GIVING love is central. Demanding it is nothing like giving it, and violates the spirit of the injunctions to love your enemies and turn the other cheek. All the commandments are aimed at each of us, almost none have anything to do with us trying to influence other's morality; and when they do it tends to be an injunction not to.
I often see claims that Christians in BDSM are supposed to do mdom/fsub only. Another implication of 1 Cor 7:4 is that husbands may be submissive as well, at least in the bedroom; the husband yields authority over his body to his wife "in the same way" as the wife to her husband.