He calls his female best friend wifey and bae?

so my boyfriend loves me very much and he always steps up to the plate and is incredibly loyal and sweet however he has a very close relationship with a girl who is his best friend

he calls her wifey, bae and she always says "i love u" and he says "i love u too" or "i love you too bae" constantly

she hates me and is always trying to sabotage our relationship, and I've always tried to make it work while saving their friendship as well. he's always trying to tell her where her place is, and to not make things bad for us. however the "wifey" abd "bae" things really bother me for some reason... am i being unreasonable? she doesn't like him, she likes another guy.
He calls his female best friend wifey and bae?
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