I allowed this question because you wrote twice. Moreover you are new member, I always encourage new members with their new thoughts.
Now what you are talking about and asking about, I simply could not relate them. You spoke about the relationship levels, and your asking is how you can be a cuckold. If you were planning to be, then you should have not scolded earlier. If you want to be dominated, that foot massage is nothing, you have to go through lot of additional pain to be real dominated. And she has to have that knack too. Are you ready for some hardcore beating, gagged and even fucked with rubber dick? If not, that its not your game.
Being cuckold means you have to be ready for watching her getting fucked in front of you and you cant do anything, ready for that?
Before you make a wish, know about these. But be sure, this is not a easy path, its like a gate of flood water, once you open, you cant close, you have to accept that. Things wont be on your wish, it will be on her.
Think again then decide.