This is weird but please hear me out!
We moved to a new house about 2 months ago. DH, myself, and two children.
The old homeowner moved to a different city and a relative lived with them - they told me while making conversation that the relative was changing jobs and was going to live in a different neighbourhood over an hour away.
The relative was very quiet during viewings and wasn't friendly with us.
I've noticed him 5-10 times now walking along our street or just standing on the corner. He doesn't acknowledge us but does look at us - I have smiled but he doesn't smile back. It's a quiet street in a residential area. It doesn't look like he's visiting anyone.
There's nothing I can do about it, but am I being weird in feeling weird about it?