The short answer is “we don’t know”.  There is so much information out there about nipple confusion.  Some will tell you that if anything other than a breast *touches* your baby’s mouth, he’ll never want to breastfeed again. Others will regale you with stories about how their exclusively breastfed baby had bottles! cups! pacifiers! in the first few hours of life and had no problem switching back to breast.  Each baby and situation is different.  It’s never a given that your baby will, or will not, develop nipple confusion if he/she has a bottle before breastfeeding has been successfully established.