well i say but he is normal in situation consedring you are childhood friends you dont want to break it because he doesnt know if their relabtionship will work or not but their freindship is working and he is not even on his own feet to support a family so he couldnt propose realtionship and marraige are two different thing so i get that he is scared to lose but he will realize that he will eventually lose when he sees her with another man and his instict will kick in then he will fuck her and marry and die
I don't know if it was lost in translation, but she literally said "I'm okay if and when you propose me", and he answered with "what does that mean?". Rrrra