Matthew Rismondo wants to donate blood to save lives but has been told he can't unless he abstains from having sex with his long-term partner for 12 months.
If the 26-year-old from Adelaide were living in the UK, he could donate much needed blood without such a restriction.
Mr Rismondo has been in a same-sex relationship with his partner since February.
"I would absolutely want to donate blood - I'm fit and healthy and I just don't understand why I can't," he said.
"Telling my partner I can't have sex with him for a year because I want to donate blood is a barbaric rule, particularly at a time of such need."