Marriage proposal or am I overreacting? (Probably the 2nd)

So it’s this guy, we are talking for around 3 months now. We talk daily from morning to late at night and we know pretty much about each other. It’s like we knew each other since always. We “argue” a lot and like teasing each other all the time. I am so shy and rarely show that I like him, but he has shown it to me a couple of times and in a very clear way eg. I sent him a funny video with a girl being clumsy and falling down, and he said “she is like you, weird, crazy, cute and beautiful”. But he rarely complements me directly, probably because as I said we like being “mean” to each other.

So, now we were talking about food and he said that his family has a barbecue every Sunday, and I was like “please adopt me!” And that’s where it got weird. He said “Well I don’t think my mother could handle another one, unless you want to marry me.” And then he tried to change the subject immediately after saying that.

What’s weird is that we are not talking for that long to get into such deep conversations. Also I’m so young, it’s actually very funny talking about such stuff from this early age😂. I’m 19 and he’s 23. He’s clearly joking but I feel that he wanted to convey once again that he likes me a lot and would consider wifing me up.

Do you think I should cut the conversation off? Or should I continue? What do you think this will end up to? I really need advice here.