Back when they were still a couple, Johnny and Bre hit the ink shop to memorialize their love for each other in tattoo form. She got his initials, "J.M." along with another special tattoo.

Johnny also had a special tat inked on his body for Bre -- though it's unclear if he plans to keep it.

As for Bre, the model announced she was leaving Johnny back in March -- after accusing him of breaking their wedding vows. She never got specific with the details but you can put 2 and 2 together.

So, this week Tiesi hit up the Beverly Hills Plastic Surgery Group to have the "J.M." laser erased from her hand ... and our sources tell us she can't wait to have a clean slate.

Bre still isn't spilling the beans on exactly what happened in her marriage -- but we're told there's about a ZERO PERCENT CHANCE for a reconciliation.