That is a horrible translation of the text! The word "ποιεῖ " means
1) to make 1a) with the names of things made, to produce, construct, form, fashion, etc. 1b) to be the authors of, the cause 1c) to make ready, to prepare 1d) to produce, bear, shoot forth 1e) to acquire, to provide a thing for one's self 1f) to make a thing out of something 1g) to (make i.e.) render one anything 1g1) to (make i.e.) constitute or appoint one anything, to appoint or ordain one that 1g2) to (make i.e.) declare one anything 1h) to put one forth, to lead him out 1i) to make one do something 1i1) cause one to 1j) to be the authors of a thing (to cause, bring about) 2) to do 2a) to act rightly, do well 2a1) to carry out, to execute 2b) to do a thing unto one 2b1) to do to one 2c) with designation of time: to pass, spend 2d) to celebrate, keep 2d1) to make ready, and so at the same time to institute, the celebration of the passover 2e) to perform: to a promise
The translators of the New NIV went with their Western understanding of the meaning of adultery, rather than a Biblical understanding. The original NIV was more in line with what other translations have always held that to mean.
