Private criminal complaint in Pennsylvania (PA)

Question Details: I had an altercation with an acquaintance over the weekend. He swung first, but I fought back. I want to file a private criminal complaint against him, but my other friend (a lawyer) told me that if he files one against me, we could both be facing misdemeanor charges and could be both found guilty and that it is possible for both of us to face fines (most likely), have huge attorney bills, and possible (but not likely) jail time. Is this true?

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