The tweet has gone viral since he posted it on Wednesday, attracting over 20 thousand likes and 1600 retweets.
Many people replying to the tweet called it a "red flag" and told him to be wary.
"This is horror film dating," one person commented.
"The call is coming from inside the house," another joked.
"Yeah that's a blazing red flag," another warned.
"Run as far and fast as possible," another advised. "I have read receipts off even for my spouse's messages. No one has need to see a read receipt."
"If someone I'd been on one date with did that, I would turn on read receipts, tell them so, read their acknowledgment, and then ghost them forever," a brutal commenter said.
Eric didn't offer detail on how he followed up but said, "'It's no love story. Or rom-com.