Never ever. Though some relationships do last, literally, till death do they part, a lot don't. Maybe matching tattoos, but I would never go as far to tattoo someone else's name (unless family as a memorial) on my body. Some people find this sweet and endearing, but what about the people who are weirded out over it, or the people who go way too far? Knowing someone for 24 hours? You don't know anything about someone. You don't know their habits or quirks yet - the things that make someone who they are, the things you're attracted to or turned off by.
Back to the original question though, I think it's pure bad luck to get someone's name tattooed on you. When you do split or divorce from this person, they're not with you forever but your tattoo is. And it's a really big turn off if you have someone else's name tattoed on you.