Girl, this situation usually has two meanings:
First, there are too many girls on blind date, so it is not easy to get confused by using your surname to note your WeChat name, and at the same time, it is easy to find you. He has no other ideas, just a simple note.
second, he likes you very much, and uses your family name as your address, which makes him feel more intimate. There is also a family name with only one or two words, which is easy to remember.
In fact, there is nothing wrong with this WeChat comment name. Most of them are convenient to remember each other and make comments according to your own habits. So don't care too much, maybe he doesn't have any other ideas at all, just a note.
If you are interested in him, you can tell him directly! Anyway, you are all blind dates, and the purpose is the same. Everyone knows that there is nothing embarrassing to confess to him, so it is really hard to understand what he means just by his WeChat comment name. You can know it by asking him yourself.
I don't want to talk about anything else. I sincerely wish you find your favorite partner as soon as possible and go to the marriage hall. At the same time, I wish you happiness every day and all the best.
the above is my answer, I hope it will help you.
I wish you success hand in hand as soon as possible.