FH is very close to his cousins...one cousin just entered a relationship TODAY and wants a +1. How do I say no nicely without upsetting her? She's very sensitive but these relationships don't last long. I'm not great at tactful language. I know "no" is a complete sentence, but I don't want her to hate me. (I also don't want random people I don't know and won't see again at my wedding when I already had to make difficult decisions and cut people I know and like.) You guys are so good at words. Help! (Invitations have already gone out!)