An “isolationship” (isolated + relationship) usually means someone or something isolated, so that no relationships are possible. The term “isolationship” had been infrequently used and is not in the Oxford English Dictionary or the Wiktionary.
 
The 2019–20 coronavirus pandemic caused many people to self-isolate themselves. A quarantine “isolationship” is a relationship with other people in the isolation (such as family members all isolating in one house), or with other people who are also isolating (such as an online relationship). 
 
“Time for an isolationship” was posted on Twitter by nyar ombeyi on March 15, 2020. “#isolationship” was posted on Twitter by Stephen Trumble on March 18, 2020.  The term “isolationship” was entered in the Urban Dictionary on March 21 and March 27, 2020.
 
   
Wikipedia: 2019-20 coronavirus outbreak
The 2019–20 coronavirus pandemic is an ongoing global pandemic of coronavirus disease 2019 (COVID-19), caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). The outbreak was first identified in Wuhan, Hubei, China, in December 2019, and was recognised as a pandemic by the World Health Organization (WHO) on 11 March 2020.
     
Twitter
Marc Maxmeister #FlattenTheCurve
@marcmaxmeister
#newword isolationship—for when she says “I’m not interested in a relationship right now….” #dating
12:58 AM · Aug 22, 2012·Hootsuite
   
Twitter
MSMnSatanBFF
@MightyManGMan
Relationship is the opposite of isolationship. #CelebrateRecovery http://mightymanamerica.com
9:25 PM · Aug 22, 2012·Twitter Web Client
 
Twitter
Trayce.
@the_trayce
I been talkin to like only 3 ppl on my phone lol #isolationship
1:37 PM · Apr 9, 2015·Twitter for BlackBerry®
     
Twitter
nyar ombeyi
@j_aouko
time for an isolationship
4:52 PM · Mar 15, 2020·Twitter for iPhone
 
Twitter
Stephen Trumble
@StephenTrumble
DAY 1 - OK. So somehow I’ve managed to trick the whole world into tricking my girlfriend into letting me move in with her (for a bit). This comes with a heavy heart as it does mean the inevitable destruction of the relationship but hey, it’s such a top flat, guys. #isolationship
6:57 AM · Mar 18, 2020·Twitter for iPhone
   
Twitter
Rev. Jimmy McArthur
@jimmymcarthur
So far, #isolationship and #disdancing are part of the new pandemic vocab.  What else do we have out there?
4:21 PM · Mar 20, 2020·Twitter Web App
   
Twitter
Æther
@aetherbinge
My love is in Spain. Now, we couldn’t be farther apart. We have a secret to share:
We #read to each other, daily. It’s a most deliciously-intimate thing that grows love, peace, & ease. Our auditoryRed heartspace for that time, nothing else exists.
#isolationship
#LoveInTheTimeOfCorona
9:22 AM · Mar 21, 2020·Twitter for iPhone
 
Urban Dictionary
isolationship
The deep sense of connection to self and house mates developed after long periods of social distancing.
“Due to this pandemic, I’ve entered into an isolationship with my self and family over these many long days and nights.”
by SalvyZ March 21, 2020
 
YouTube
Isolationship
Mar 24, 2020
Madeleine Black
Day one of UK lockdown. How is your relationship to being isolated? Let’s try and embrace our Isolationship
   
Urban Dictionary
isolationship
Long- or short-distance relationship between two people kept apart due to shelter-in-place constraints.
Their hot and heavy isolationship was getting weird, the limits of cyber romance coming clear. She lived three blocks away from him, they hadn’t been able to see the other for two weeks, each of them trapped in their apartments.
#phone sex#quarantine#coronavirus#nothing like the real thing#social distancing
by Monkey’s Dad March 27, 2020