Bf said I hardly know him

Na

I know I don’t know my bf for much long but we’ve been dating since February. Started dating right away from a one night stand we kept speaking and after a couple weeks we started dating.

I would actually say yes to marrying him even with just knowing him since feb. Idk what are your thoughts? I just find his response so odd because why would u even ask a question like that and then react that way. Did he expect me to say no???