Paying on the first date

First date with a guy . We went out for a snack . I’m a “ let’s split the bill “ person - i will pay fully if i end up having a great time and if it will happen again but otherwise no . When the bill came he didn’t even bother to look at it , like he is the one who wanted to meet ! I’m an awkward introvert so i just paid without uttering a word . After returning he messaged me saying a Thankyou ?! Has this happened to any of you ?