Is it normal that my wife told me that she fantasizes about sucking big tits

My wife is size DDD herself. I said, so when we are out somewhere and you see a set of breasts on a woman that you’d like to suck, tell me. She said, okay if you don’t get mad at me. I’m wondering if she drinks enough at a club, will she try to hit on another big titted woman. I hope that she will and they make out and suck on each other, letting me watch.