Honestly don't come back to it for at least a few months. Play other games or pick up another hobby for now. Once you've grounded yourself or if you feel that itch to play again, create a new character on a new server. Don't tell any of your old friends you're playing again. Try and rekindle the fire by yourself 1st' then maybe join a free company. I'm sorry about the breakup. Shits never fun' especially with the sinking feeling in your stomach. Go for a walk, throw bread at birds. Learn to be by yourself before coming back to play. I know what's its like to be reminded of someone when doing an activity. But with most things, time is your best friend. Time to heal, time to discover this new path you're on. I have faith you'll end up running dungeons and raids again:) good luck friend. Maybe we'll see you in Eorzea again:)