The blind date said in the text message: Haha, your wife will be happy in the future. What does this sentence mean? Does it mean that there is no chance for us two?

It’s not impossible. I hope to get closer to you. It mainly depends on what you do next. This also belongs to the duplicity of girls. She can't say "Haha, I will be happy from now on", right?

So, there are several possible ways:

1. Answer her at the time, "I want this person to be you" or "Are you willing to be the protagonist of my happiness?" "And so on.

2. Next, behave well and be more proactive in pursuing her. She has actually hinted to you, but it is just too "dark" for you to understand.