Regular but name changed for this
I've got an ex - very ex, from about 18 years ago - let's call him John (he has an unusually spelt surname).
Today I got a friend request on FB from someone I don't know, let's call him Pete. When I looked at Pete's page to see how I might know him - as I thought he might be someone from another forum- there were various references/links to posts by "John" e.g. petitions etc although he himself isn't on FB. In Pete's friends lists there are several with "John'"s surname and he appears in one of their photos.
So now I'm really stumped. When we were dating (it was v on & off and one-sided on my part!) I never met any of John's friends or family. So how can "Pete" know me? And why has he requested me? Also I've married since then and there's no reference to my maiden name on FB. Any ideas as to what's going on and what I should do?