Let's get together
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let's get together (sometime)
We should meet up or spend time together at some point in the future. I like your business proposal. Let's get together sometime and go over the finer details. Let's get together and work on our project this weekend.
Let's get together (sometime).
a vague invitation to meet again, usually said upon departing. (The sometime can be a particular time or the word sometime.) Bill: Goodbye, Bob. Bob: See you, Bill. Let's get together sometime. Jane: We need to discuss this matter. John: Yes, let's get together next week.