Full-size sex dolls can play a variety of roles in an intimate relationship, depending on the preferences and dynamics of the individuals involved. Here are some potential roles full-size sex dolls could play:
 
Full-size sex dolls can be used to fulfill specific fantasies or desires that may not be feasible or comfortable for a human partner. Whether engaging in role-playing scenarios or experimenting with different physical attributes, dolls provide a non-judgmental outlet for fantasy fulfillment. This will make couples more honest and make their relationship better. In some cases, couples may view full-size sex dolls as a form of companionship and emotional support. While a doll may not possess human emotions, its presence can provide a sense of intimacy and connection to someone who desires closeness or reassurance. Full-size sex dolls may be beneficial for couples whose sexual desires or preferences do not match. The doll provides a safe and consensual outlet for sexual expression, allowing partners to bridge the sexual desire gap without pressure or resentment. Using a full-size sex doll together encourages open communication and exploration of each other's desires, boundaries, and fantasies. Couples can use the doll as a catalyst to discuss their sexual needs and preferences, promoting intimacy and understanding in their relationship. Introducing a full-size sex doll into a relationship can reignite passion and creativity in the bedroom. The novelty and excitement of incorporating new elements into an intimate encounter can bring couples closer together and strengthen their bond. Some couples regard full-size sex dolls as an investment item, and they prefer to buy more realistic silicone sex dolls to provide the best choice for their sex and art.
In the relationship between the sexes, full-size sex dolls help couples better promote their relationship. For those who like to create, they prefer to buy separate sex doll heads and sex doll torsos, which can exercise their hands-on ability.