The urine of a healthy person comes out sterile, so is safe from that point of view. However, urine is a waste product from the body, so drinking it is bad for you over time. Please note I said "healthy person". If there is any chance your boyfriend has an infection you should not have intimate relations with him and not drink his urine either. Question - why would you want to do this anyway?
Urine is expelled from your boyfriend's body because it is toxic to his body.
#1- why on earth would you do that? #2 no, urine is consisten of the toxins that the body excretes and they're all bad for you. There is a certain way you can drink it, but I don't know why you would want to...