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.BUT that doesn't mean he gets to string you along while he does.
Dating as an institution is a relatively recent phenomenon which has mainly emerged in the last few centuries.
You can tell him what you would and wouldn't be OK with—as in, "I'm fine with taking things slow, but I don't want to see other people" or whatever your bottom line is—and then give him some space to figure out if he wants that too.
If he can't date you in a way that makes you happy, you should absolutely cut him loose. Write to [email protected] we'll try to talk it out!
In modern times, emphasis on the institution of marriage, generally described as a male-female bond, has obscured pair bonds formed by same-sex and transsexual couples, and that many heterosexual couples also bond for life without offspring, or that often pairs that do have offspring separate.
Thus, the concept of marriage is changing widely in many countries.
That said, I am sympathetic to the enduring trauma of getting over a long-term relationship.