Why "Kill your darlings"?

[Rajvik]

there will come a time in BROB'd, before the character reaches FoZ, indeed before he even reaches NGE that he's going to fall in love and take the other character with him through the multiverse with him. This is going to get her killed either in the next world or the one after that, i haven't decided which yet. the building of the romance is going to be a big story between the character and the leading six of FoZ and her death, (as well as the responsibility angst the character feels over her death) is the main reason he doesn't want to ever take anyone with him when he jumps worlds anymore. Sorry but stealing the idea from F&F6 only the character doesn't get to go home but has to go on through various worlds.