Romantic context:
* "Want you to be with me": This means the speaker desires a romantic relationship with the listener.
* "Want you to be with someone": This could mean the speaker wants the listener to be in a relationship with someone, even if it's not them. It could also suggest that the speaker is worried about the listener being alone.
Non-romantic context:
* "Want you to be with someone else": This could mean the speaker is encouraging the listener to spend time with a particular person, like a friend or family member.
* "Want you to be with us": This could mean the speaker is inviting the listener to join a group or activity.
Other possibilities:
* "Want you to be with the program": This means the speaker wants the listener to agree with a plan or idea.
* "Want you to be with the team": This could mean the speaker wants the listener to join a group effort or be supportive of a cause.
To understand the precise meaning, you need more information about the context and the speaker's intentions.
Can you please provide more context or the complete sentence? I'd be happy to help you figure out what it means.