And poem or no poem, if you want to call your girlfriend baby boo, you're entirely entitled to do such and shouldn't be ridiculed for it. I have inside jokes and nicknames for me too, and I like them. Again, it's your relationship, and I don't think anyone has the right to critique truly, unless there is an aspect in the relationship that would be harming you or your partner.
Firstly I would like to say thank you very much for that
Secondly, thank you very much for that xD