I appear to have been following someone on Instagram that I'd unfollowed previously and I don't know how this happened and now it looks like I'd been stalking.
He's messaged me now

After a long chat he confirmed that he'd just been stringing me along when we dated last year. I'd had enough and ended it but was never sure. Closure can be such a bitch. I think this calls for an aperol spritz or 5.