My f/o is already married with 3 women... That doesn't mean he can't have one more wife or just fall in love with me and leave everything behind (jk). Yumeshipping is about having fun and enjoying yourself! Don't pay attention to people who say that kind of things, you are not doing something wrong

There is not really a norm! I suppose is about boundaries and the way you relate w ur fo. To be honest i'm kind of selective when it comes to certain characters but it's bc i consider them my real safe place, in a vulnerable way deep in my identity or self steem, things like that