Its deluded social conditioning that when they fuck you, you should marry them.
Occasionally.. I've tried a little experiment.. when they start getting too clingy and wanting more, proper start bummin up to them, be dead clingy, act a bit needy, keep textin um non stop and be like "why not textin back babe
xxxxxxxxxxxx" bla blah blah
Then they back off a bit.. then you go cold on them again and get some more sex