Place-holder 

The guy/girl that is dated or messed around with until the user can get the guy/girl that ditched them to come back.

Often the user was just a place-holder for said ex and didn't know it/can't get over him/her.

girl:Oh yeah I can't wait to hang out with you tomorrow <33!! love you baby
guy:*awesome this is love ^.^*

The following Evening:

girl:Yeah...I'm back with <insert douchebag that just ruined your fucking life> and I wasn't really in love with you.
guy:*Holy fucking shit I'm going to kill myself as soon as I finish thinking this.*

Perfect example of a Place-Holder...often suicide IS the result of being a Place-holder.
Other results are binge-drinking and death threats.

Place-holder by Heyfml May 9, 2011

place-holder 

1.When you dating someone just to get over someone or just dating around until you're ready to get back on horse.

You Know Dave is Sally's place-holder, Until she's ready to walk down the aisle. Poor Dave

place-holder by ryukage99 July 3, 2011

Place-holder 

When someone is dating someone else just for them to be there, simply to be able to say "yeah I'm actually taken" even though they hate each other.

"I swear to God, Nick is just using Jen as a Place-Holder!"

"I'm bored....Lets go find us some place holders" -- guys

Friend 1 - "God i fucking hate Michelle!"
Friend 2 - "Aren't u dating her?"
Friend 1 - "Yeah"
Friend 2 - "Well here she comes"
Friend 1 - "Hey baby!"

Place-holder by Krzysztof January 11, 2009

Placeholder 

the person one dates, makes out with, or sleeps with while waiting or actively searching for the love of one's life - who is quite often found during or immediately after relationship with said placeholder.
Though also viable, cute, and longing for a longterm relationship, there is often some unknown 'thing' in the placeholder's manner, ambition, world view, or timing that often prevents the placeholder from being "the one."

"I just found out Chris married the woman he started dating when he was still sleeping with me. He told me he didn't want a serious relationship. I feel like such a placeholder."

Placeholder by 50_dates October 11, 2012

Placeholder Text 

Placeholder Text is when one is being used as a fake partner. Often being cheated on or is not good enough for their partner.

I can’t belive john is sydni’s Placeholder Text. She sent me nudes last night

Placeholder Text by Thiccboi12349 May 8, 2018

placeholder boyfriend 

A boyfriend who is just there to satisfy the need for having a boyfriend.

i.e. someone who is fulfilling short-term needs in your life, but for whom you don't see a long-term purpose.

Eh, he's just a placeholder boyfriend in my life. I hate sleeping alone.

--

I don't get fazed when I'm into a girl who has a boyfriend. I always just assume that he's a placeholder boyfriend, and that she'll dump him once she finds someone real.

placeholder boyfriend by Philosophistry April 5, 2009

Placeholder girlfriend 

A girfriend (or boyfriend) that you date with the plan to ditch them as soon as something better comes along.

"Yeah, Amanda's not great but she's just my placeholder girlfriend."

Placeholder girlfriend by writeon January 13, 2012