It is the attitude you have around people you trust, people who you know won't hurt you or make a fool out of you if you let your guard down.
Humans have been compared to other species in terms of sexual behavior.
Neurobiologist Robert Sapolsky constructed a reproductive spectrum with opposite poles being tournament species, in which males compete fiercely for reproductive privileges with females, and pair bond arrangements, in which a male and female will bond for life.
Dating may also involve two or more people who have already decided that they share romantic or sexual feelings toward each other.
These people will have dates on a regular basis, and they may or may not be having sexual relations.
This is why working through rejections is no good at all.
Your subconscious learns to expect rejection, you vibe mistrust, and it gets worse.
The sad irony is, when you are steeled against rejection, you vibe mistrust and so you get mistrust back at you, and are rejected.
When you trust someone, your attitude is one of acceptance, rather than resistance.
While pair-bonds of varying forms were recognized by most societies as acceptable social arrangements, marriage was reserved for heterosexual pairings and had a transactional nature, where wives were in many cases a form of property being exchanged between father and husband, and who would have to serve the function of reproduction.
Communities exerted pressure on people to form pair-bonds in places such as Europe; in China, society "demanded people get married before having a sexual relationship" and many societies found that some formally recognized bond between a man and a woman was the best way of rearing and educating children as well as helping to avoid conflicts and misunderstandings regarding competition for mates.
These species-particular behavior patterns provide a context for aspects of human reproduction, including dating.