"I only wait for the moment I get to see you" is a phrase that could be used to express the idea of waiting specifically for the opportunity to meet or see someone. It could be used in a romantic or platonic context.

This phrase does not have a specific origin, as it is a common expression that can be used in many different situations. Here are a few examples of how it could be used in Engpsh, along with their translations into Chinese:

"I can't wait to see you again. I only wait for the moment I get to see you." (我迫不及待想再次见到你。我只是等待着和你相遇的那一刻。)
"I've been looking forward to this moment for so long. I only wait for the moment I get to see you." (我期待这一刻已久。我只是等待着和你相遇的那一刻。)
"I know it's been a while since we last saw each other, but I only wait for the moment I get to see you again." (我知道我们上次见面已经很久了，但我只是等待着再次和你相遇的那一刻。)

In each of these examples, the phrase "I only wait for the moment I get to see you" is used to express the speaker's desire to see the other person and the anticipation they feel in the lead-up to that moment.