To be honest girlfriends don’t have rights! I know that sounds harsh but….. it’s the truth!
Even if you two live in the same house won’t matter in you making decisions because end of day, you’re not his wife. What I can say is going forward if he feels that he wants you to have more of a say he should have a power of attorney and health directives done and notarized that states you are the one to be in charge. You can’t just simply be in love and not have proper paperwork in place
Same as if you’re living together, check laws of your states. If you’re name isn’t on the lease you may find yourself in a sticky situation should he change his mind. Legal documentation should be the name of the game when you’re single or even engaged and feel as if you want to have marital responsibility without the actual marriage. Being engaged is not recognized as marriage regardless of how you feel. Feelings and legality do not always go hand in hand! People don’t think about that when you’re so in love and not thinking about protecting yourself. Also be sure your boyfriend even wants you to have that much say should he not be able to speak for himself. Your relationship might not have gotten to that level as you think.
Being a girlfriend or life partner is nice but if this is the notion you and your man choose be sure to get paperwork so that it can’t be disputed or else his actual next of kin will be the one making those decisions even if it’s not the decisions that the one incapable to make those decisions want! Your boyfriend needs to be clear that as an adult he does what he wants done for his own life and having the proper paperwork will help! Protection is the name of the game and I hope your boyfriend makes a speedy recovery!