Here are some options depending on the context and your relationship with the person:
For a close friend or romantic partner:
* عزیزم (azizam): This is the most common and versatile term, meaning "my dear" or "my love."
* قشنگم (qeshangam): This translates to "my beautiful one."
* جانم (janam): This means "my life" and is very affectionate.
* عسل (asal): This means "honey" and is a common term of endearment.
* ناز (naz): This means "grace" or "charm" and can be used in a playful or affectionate way.
For a casual interaction:
* دوست (dost): This means "friend" and is a more neutral term.
* رفیق (rafiq): This also means "friend" but is more informal.
Important note: It's crucial to consider the relationship and context when using these terms. Some terms are very intimate and should only be used with someone you are close to.
It's also important to remember that language is constantly evolving, and new slang terms are being created all the time. If you're unsure about the appropriate term to use, it's best to ask a native Farsi speaker for guidance.