A math saying has been printed on many images:
   
“Math tells us of the three saddest love stories:
TANGENT lines that had one chance to meet and then parted forever.
PARALLEL lines that were never meant to meet.
ASYMPTOTE lines that can get closer and closer but will never be together.”
       
The math quotation has been cited in print since at least 2010. Authorship is uncertain.
   
       
Taringa!   
chistes geeks
hachetriplecero
August 5 2010
(...)
las 3 historias más trístes contadas por las matemáticas:
Math tells us of the three saddest love stories: TANGENT lines that had one chance to meet and then parted forever. PARALLEL lines that were never meant to meet. ASYMPTOTES lines that can get closer and closer but will never be together.
fuente: http://lov-you-maybe.tumblr.com/post/924262211
 
Twitter
hiatus Crickette
@blind_bombshell
Math tells us of the three saddest love stories: TANGENT lines that had one chance to meet and then parted forever. PARALLEL lines that—
7:36 PM · Sep 15, 2010·Twitter Web Client
 
Twitter
audrey 🌻
@moonycoco
Saddest Love Story in Math : TANGENT lines that had one chance to meet and then parted forever.
10:27 PM · Jun 21, 2011·Twitter Web Client
 
Reddit—Quotes     
Posted by u/pseudosz 8 years ago (January 2012?—ed.)
Math tells us of the three saddest love stories: TANGENT lines that had one chance to meet and then parted forever. PARALLEL lines that were never meant to meet. ASYMPTOTE lines that can get closer and closer but will never be together.”
 
Twitter
LM.
@_lucindamcg
Tangent lines that had one chance to meet then parted forever
7:35 PM · Oct 15, 2012·Twitter for Android
   
Twitter
Nicole ^_^
@MeiaNicole1
Math tells us three of the saddest love stories: TANGENT LINES that had one chance to meet then parted forever…. http://fb.me/3FDDyf49Y
6:56 PM · Jan 29, 2016·Facebook
   
Twitter
jayula sarnaik
@jayulasarnaik
“Math tells us three of the saddest love story… TANGENT- lines that had one chance to meet then parted forever…. http://fb.me/3ZfUqXuK5
1:16 PM · Jul 13, 2016·Facebook
     
Twitter
angle°
@eynjulxkeyser
ASYMPTOTES- lines who can get closer and closer but will never be together.
Parang kayo close na close nga kayo pero di naman kayo together😝
8:28 AM · Sep 8, 2016·Twitter for Android
 
Twitter
Vince
@K1llerCage
“Math tells us three of the saddest love story…
1. TANGENT- lines that had one chance to meet then parted forever.
#HugotInhinyero.
2:47 AM · Jun 12, 2017·Twitter Web Client
   
Twitter
howell
@heyitsivhan
2. PARALLEL- lines that will never meant to meet.
3. ASYMPTOTES - lines who can get closer and closer but will never be together.”
8:07 AM · Jul 19, 2017·Twitter Web Client
 
Twitter
GIF
@yomisteryoso
Math tells us three of the saddest love story. 
TANGENT - lines that had one chance to meet then parted forever.
PARALLEL - lines that will never meant to meet.
ASYMPTOTES - lines who can get closer and closer but will never be together.
9:57 AM · Aug 12, 2018·Twitter Web Client
 
Facebook
WattpadisLife
June 2, 2019 ·
Math tells us three of the saddest love story:
 
Tangent- lines that had one chance to meet then parted forever.
Parallel- lines that will never meant to meet.
Asymptote- lines that can get closer and closer but it will never be together
 
Facebook
Hugot Inhinyero
October 17, 2019 ·
Math tells us three of the saddest story. TANGENT- lines that had one chance to meet then parted forever. PARALLEL- lines that will never meant to meet. ASYMPTOTES- lines who can get closer but it will never be together.
 
Twitter
SherilynV
@SherilynV3
Math tell us three of the saddest love story…
Tangent- lines that had one chance to meet then parted forever.
Parallel- lines that will never meant to meet
Asymptotes- lines who get closer and closer but it will never be together.
5:59 PM · Jan 29, 2020·Twitter for iPhone