<prompt> Human: Background: My dear brother who doesnt use reddit has been accepted to Dentistry in Australia Perth to be exact and dropped a 25k deposit to secure his spot there in January. He lives in Ontario, Canada and has for 99 of his life. He is in his mid-20s and has near-perfect credit score. He will need 300k over 4 years to pay for his schooling.Issue: our brother who is a dentist agreed to be his cosigner until he found out that my brother is engaged to a girl who he doesnt approve of and refuses to cosign for him unless he breaks up with her. He doesnt have anyone else who is willingable to be his cosigner with a job in Canada though our grandmother has assets and is willing to be. What are his options?TL;DR: My 20-something Canadian brother has been accepted to Dentistry in Australia and now our brother who agreed to cosign for him for a student loan 300k is withdrawing his offer because he found out that my brother is engaged to someone he doesnt approve of.  <response>: Good for him. I would not want to cosign 300k for anyone 