Am I thinking too hard??

So my boyfriend and I have been together for 4 months. He's my first boyfriend but he's had other relationships. I'm 19 and he's 20. We meet each other's parents and when I met his dad he said he wanted to meet my parents and it's understandable. Today I asked him when our parents would meet (he wants me to meet his mom this weekend). And he asked why would they meet. We're not planning a wedding. I think we're fine with just meeting each other's parents. Is it weird that he doesn't want our parents to meet or am I just thinking too hard?