Lying and cheating are obvious relationship dealbreakers. But finding out that your partner confided in ChatGPT about relationship doubts? The romantic metrics are murkier. For Lindsey Hall , a public relations professional who pens a Substack titled “Lindsey Hall Writes” — and wrote the recent essay “I Stumbled Upon My Boyfriend’s ChatGPT and It Ended Our Relationship” — this question came up when she accidentally came across her now ex-boyfriend’s ChatGPT history. In the ChatGPT thread, a devastated writer found that her boyfriend was not being honest about his feelings toward her. Yuliia – stock.adobe.com She recalled borrowing his laptop — as he sat beside her on his couch, sleeping — in order to respond to a client after her phone had died.…