The question could be anything, the point is that your husband/partner should be upfront and honest with you. Making a promise you can't or won't keep only to have your partner find out about it later violate and decimate trust in the relationship. Without trust, a relationship is impossible.
No issue with porn here as my husband and I have researched a few sites that we go to and use that I know are women owned/operated, and my DH and I both aren't into depiction of violence/degradation, so that part of it has never come up for me like it had in past relationships. Have I ever felt a twinge of insecurity looking at the screen in five years with my DH? Absolutely! I'm human! I'm fortunate that I can openly tell my husband "I don't know why I'm feeling this, but I'm feeling insecure. Hugs and reassurance?" and his response is always to turn off the TV and focus 100% on me with no pouting or passive aggressive reaction.
I guess what sealed my trust with the DH was at the beginning, 5 years ago, the first time I put on erotica I noticed a different reaction than any other man I had been with - a handful of times when I had my back to him, or had gone for a wee, I managed through reflections or side glance that he was focused on me, he didn't even look at the video! This is something that's never changed.
I should note that I am 31 now, but when I was in my teens through mid 20s, I struggled immensely with jealousy and anger at pornography. This is my first relationship that it hasn't caused a problem. Honesty, communication, love, and feeling that my DH is honest when he tells me I'm his number one desire - because his actions have always backed this up. Everything together has allowed me to enjoy erotica with my partner as I would myself, which I would have thought impossible a decade ago.