Help translating a hindi/ indian word please

My boyfriend is of indian heritage and often calls me a word which if I spell phontetically is "jupella". He says it roughly translates to "baby" in English. I wanted to address a valentines card using this word but cannot find it anywhere. I have looked up all the English terms of endearment I think of in an English- Hindi translator but have not come across anything that looks or sounds anything like it. I am now wondering what it is he's been calling me all this time . If anybody recognises it and could tell me what it means and how to write it in hindi or point me in the right direction it would be much appreciated, thanks.