Early 2020, it felt like I was "in this together" with an old friend of the opposite sex before the pandemic broke out. We found some common ground after my friend had some bad luck on Tinder. Then bad luck at work. Then health problems. It drained me but I was supportive. Then they sort of disappeared. Turns out they hooked up on Tinder again. I feel used as a surrogate, burned and kind of alone, and that the friendship was false.