Why did my boyfriend expect me to lend him money?

We've been dating (live separately in our own houses) for 9 months and he got upset that I gave some money to my grandma for her b-day and helped out my mother with her bill.

He mentioned about the time he asked me for help (with money) and I declined him. This was my reply to him:

''I only help my close family members with money and if it's really needed. I DO NOT share bills, live together nor give money to a boyfriend. I don't share money with bfs.''

Why did my boyfriend expect me to lend him money?
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