Relevant during the 2020 pandemic quarantine.
When someone comes on extremely strong with early declarations of love or possibly a future relationship together. The purpose of this is to gain confidence in order to make someone comfortable enough to eventually break quarantine and have sex with them.
(Original Source: Unzippedintentions.com)
"He told me that he could totally see a future with me and see himself falling in love. I think he's Quarantine Grooming me"