Research has found that 26 percent of heterosexual women, 52 percent of heterosexual men, 42 percent of non-heterosexual women, and 66 percent of non-heterosexual men had fantasized about cuckolding / cuckqueaning.
Over the years, the term cuckolding has evolved to mean something more along the lines of a fetish or kink in which a person ("the cuck") gets turned on by their partner having sex with someone else. In many scenarios, the cuck is turned on specifically by watching their partner have sex with someone else.
Of course, like many other words in the realm of sexuality, the exact definition can be up to each couple's interpretation and what each person is happily consenting to.
Couples who participate in cuckolding each have different ideas of what cuckolding means to them as a result of communication, experimenting, and the ever-evolving world of sexuality.
For many people, the idea of watching their partner doing sexy things with another human being is incredibly sexy and beyond exciting. Even though having sex with one's partner on a regular basis may be hot, one rarely gets to see what it looks like from other angles and what they really look like while having sex. Cuckholding is live-action porn, in front of your face, in which your partner is the star.
For people who enjoy voyeurism watching is truly just as thrilling as being in the action and perhaps even more so. For those who are exhibitionists it is also a fun way to explore that fetish. For those who enjoy BDSM, there can also be some sexy power dynamics at play in a cuckold situation. For some people, cuckold humiliation is the main draw; basically, the idea of being cheated on consensually brings up feelings of jealously and humiliation that can be a huge turn-on. Humiliation is actually a common fantasy and close relative to dominant-submissive play.
Depending on the gender of the people involved, cuckolding can also be a wonderful way to explore your sexuality while remaining within an existing relationship.
When a cuckold is deeply/spiritually connected with his wife/partner, he merges his sense of self with her. Her pleasure becomes his. In fact, her pleasure becomes ever more important to him than his. The more she is able to immerse herself into deriving her own sexual pleasure, the more turned on the cuckold becomes.
Cuckolding is essentially a container in which lots of different exciting dynamics can happen: compersion (the act of experiencing joy at your partner's pleasure and growth), jealousy (which isn't necessarily a bad thing), fulfilling a fantasy, power play — the situations are endless.
If you and your partner have an interest in experimenting with cuckholding, first and most importantly talk about what each of you finds sexy about the idea of cuckolding and why. Then elaborate on the roles each person would be participating in if/when the cuckolding were to happen. This way you're both on the same page and can start envisioning the same fantasy.
Next, take it into the bedroom, but just as the two of you. While you're having sex, talk sexy together about what would be happening right now if you were in a cuckolding situation. Let each person share what they would be doing, what they would want their partner to do, and what the third person would be doing. You might also consider watching some cuckolding porn to get more comfortable with the idea and see how it could play out. This is important because it makes it more realistic and it allows you to play out this fantasy together before jumping into anything.
When you are both comfortable, start looking. Use this site and create a profile about yourselves, what you are looking for, and what you are comfortable with in terms of arrangements. This ensures that people can match themselves to your requirements and help you to find the right consenting individuals for cuckolding fun.
Never "surprise" your partner with cuckolding or anything sexually for that matter. If someone consents to have sex with you but you're intending to bring them home to your partner that is definitely not the best approach. Honesty, over-communication, and planning are needed for most sex experiences and makes the sexy time way better when it's worry-free and everyone's boundaries/limits are out in the open.
If there is absolutely anything you take away from this, let it be: communicate, communicate, communicate. Sex is complicated, but it can be less complicated and far more fun if you bring all expectations and boundaries out in the open so all parties involved can see them. Then, go have some cuckolding fun.