If the "other guy" is a separate human entity that is also playing with his own account, you can request at exemption via the petition forum. Read the sticky thread and be sure to answer each of the questions. Be patient, and do not bump your post. They're processed in batches so it may be some time (could be several weeks) before it is processed.
Then, the two of you (two individual humans each with their own account) can play via the same connection. Do not at any time try to play two characters by yourself. You'll get caught, and both accounts will be banned.
Link to petition thread:
https://www.project1999.com/forums/f...splay.php?f=25
-Mcoy