You've got a tattoo with your exes name on it. Your ex was a professional POS like literally had a business card that read "Asshole for Hire". It was that same confidence in being an asshole that attracted you to him in the first place...you got problems too. Anyhoo, now Cliff (I know, what a name! Sounds exactly where you feel like disposing of the body) has a place securely on your left boob forever. You could get it lasered and have a nebulous scar or you could get some bigger splatter to make it look like he doesn't matter, but why not use your tit to badvertise what a real piece of shit he was. For just pennies (Well, it sounds good, like you're doing a service for women everywhere) you can add a message, a public service announcement if you will, to broadcast what exactly Cliff is all about. Here are some words and phrases you can add to a tattoo so you know you can insure you have the last say.
(Cliff)"IS STUPID" - Well, isn't he? He left you. You who treated him right. You who paid the pills. You who did sweet things on Holidays. He had a free ride and he fucked it up. What an idiot!
"I GOT FUCKED OVER BY" (Cliff) "AND ALL I GOT WAS THIS LOUSY TIT TATTOO" - Very honest.
(Cliff)"HAS A SMALL PENIS" - This doesn't have to be true, but no one will ever know the truth and it will plant a question in their mind as to whether or not he really does have a micro-thingy.
Lots to work with here and depending on your bra size you could fit a whole sentence! Have fun with Cliff, the kind of fun you wish you'd had with him, but never got the chance. Asshole.