I need help

[Peggo]

I'm assuming you don't have each other on your friends list because then it would be simple.
But fear not. If you can get a message to your friend outside of the game then tell them to meet you in the first world in a place that you both know how to find like Port Royal ship fixer, or anything that appeals to you.
Once you do meet up make sure you put in the friend request so you can easily find each other next time with the GoTo button.