A type of boyfriend whose sole existence is to please their partner. They usually have a permanent "model" stare in photos and videos on Instagram with very little expression. You'll see the girlfriend constantly posting on Instagram about how great their boyfriend is, to the point that you'll question whether the boyfriend's sole purpose is just to make his partner look good. The toy boyfriend has very little personality because they exist just to stroke the ego of their partner.
"Look at Garret, he's such a toy boyfriend! He barely says a word whenever we hang out, and is always texting his girlfriend."
by washmybigjohn November 3, 2021

Describes a period of time when a friend is un-contactable due to being loved up with/holed up with/obsessed with a new boyfriend. Person becomes as isolated and uncontactable as if they were on a desert island.
'Have you heard from Kayley?'
'Nope, she's on boyfriend island. She's not calling anyone back. Totally out of the loop'.
'Nope, she's on boyfriend island. She's not calling anyone back. Totally out of the loop'.
by sophiesmith June 20, 2010

When you start dating your s/o and fall into the trap of changing your eating and exercise habits. This is due to the lack of incentive to be slimmer since being in an established couple leads to complacency.
Nick, now you’re in a new relationship. Which puts you at risk for gaining the boyfriend 15. The boyfriend 15 quickly turns into the boyfriend 20.
by tlapage November 6, 2017

A male significant other that is bigger, and more physically capable to protect his companion, yet is loyal, accommodating, and submissive to his significant other.
"Your boyfriend is so strong, he must wear the pants in the relationship."
"He is strong, but he's more of a Doberman Boyfriend."
"He is strong, but he's more of a Doberman Boyfriend."
by Arty9s September 14, 2022

A boy who you are making out with, who approaches the state of boyfriend - without ever reaching it.
"My asymptotic boyfriend Matt continued to introduce me as his friend whenever we ran into people he knew while we were out, despite having been dating for a couple of months."
by carlygoodman July 30, 2007

A boyfriend you have loved your whole life. Most likely your first love that you have compared all other boyfriends to.
"Why are you staring at that guy?"
"Oh... I've known him since I was 15. He was my first love."
"OMG! He's your forever boyfriend!"
"Oh... I've known him since I was 15. He was my first love."
"OMG! He's your forever boyfriend!"
by Kelloh2.0 February 24, 2015

The hero Male character in the romance novel you're currently reading. Because real men suck at romance, the book boyfriend exists to fill the void.
"Who's Gabe again?"
"The badtard son of a rodeo clown who has a heart of gold and a lurid past."
"And where did you meet this guy?"
"I didn't. He's my book boyfriend. "
"The badtard son of a rodeo clown who has a heart of gold and a lurid past."
"And where did you meet this guy?"
"I didn't. He's my book boyfriend. "
by HeroHandy May 7, 2019
