My boyfriend introduced me to his grandparents. Is this a big deal?

My boyfriend of almost 5 months took me to "meet" his grandparents yesterday, I'm the first girlfriend he's taken to meet them... They are in a cemetery and this was the first time in 12 years he's been there and his grandmother died 10 years ago. Is this a big deal or does it mean nothing that he wanted me to meet his grandparents?
My boyfriend introduced me to his grandparents. Is this a big deal?
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