The first single I bought was Maggie May. Actually my best friend at the time went halves on it, so we jointly owned it. She'd have it one week and me the next. Seemed perfectly normal at the time.
The next single I bought was Jeepster by T Rex which was mine, all mine! I rather hoped Marc Bolan might be mine too.
After that I graduated to LPs and bought Led Zeppelin 4 followed by Pink Floyd Dark Side of the Moon and Carol King Tapestry.
I eventually gave exclusive ownership of Maggie May to my friend and, 50 years later, I sometimes wonder if she still has it. I foolishly lent Zep 4 to someone at a boozy party and never saw it again. My ex husband snaffled Dark Side of the Moon when we split up but I've still got Carol.