The term "Daddy" denotes that your lover is the dominant figure in your relationship. He may like being reminded of this and may wish for you to refer to him as such. Aside from the sexual connotation of "daddy," your lover may want you to refer to him as such because he provides for and cares for you.
If you use the term "daddy" often, your boyfriend will learn to love it. If not, just start calling him by his name instead!
However, if you use the term "daddy" in a derogatory way, this will come across as disrespectful towards him and your relationship will suffer as a result. So, when you call your boyfriend "daddy," mean it in a loving way!
If a guy asks his girlfriend to call him "daddy," it suggests there are major inequities in the relationship and he treats her more like his kid, in terms of needing to take care of you, you being the fragile one who needs someone to take care of her, and the guy being the big daddy who does this.
It's also possible that she wants to be called "dad" or "daddy." Her wanting this should not offend you, but rather make you feel good about yourself and your relationship.
Call her whatever you both like.
She claims that calling your spouse "daddy" is merely another form of sexual (or non-sexual) role play. It's totally fine—and natural, she says—within the parameters of a safe, consenting, loving adult relationship. Power exchange role plays, in particular, are a highly safe approach for people with strong personalities to let go. It's also popular among couples who want to give their relationship a try without risk of pregnancy or disease.
In fact, "daddy" is the most common term used to refer to one's husband or boyfriend because it does not imply any specific age or gender difference between the two parties involved. As long as you are both aware of what you're getting into and can negotiate boundaries within the game, there is no problem with calling your partner "daddy."
Use caution not to confuse "daddy" with other terms having sexual connotations such as "dad" or "dude". Also be careful not to use this term if you are not comfortable with your partner seeing you in a parental role. "Daddies" like to think of themselves as generous lovers who are willing to take risks to bring pleasure to their partners. The word itself does not carry any sexual implications beyond this description.
Asking your buddies is a smart idea. Discuss it with them and see if they have had a similar experience. Perhaps your friend's boyfriend has urged her to refer to him as "daddy" as well. Your friend can explain the definition of the word as well as how they handled the problem. If you have male friends, this is an excellent moment to seek their counsel.
By seeking advice from people who know your boyfriend, you will be able to make an informed decision about what to do. If he refers to himself as your "daddy," then follow your heart. You deserve to be called by a loving name.
However, if his behavior makes you feel uncomfortable or unsafe, then it might be best to stop using the word "daddy." Explain to him why you made the decision and give him time to understand your reasons. Don't worry about ruining the relationship because that won't happen. He loves calling you daddy and that's what matters.
He might get upset at first but will eventually come to respect your decision. Never force someone to change the way they speak if it makes them feel bad. Allow them the freedom to say the word as often as they like so long as it doesn't hurt your feelings.
If he refuses to stop calling you daddy then end the relationship. It's not worth fighting over something so small. Have the courage to stand up for yourself even if your boyfriend isn't aware of how it makes you feel.