<human>: Summarize the given text in a few sentences.

Let's just call him John. When I start typing J-o-h in the search bar he's appears as the third suggested person - right after my actual friend's whose names start with J-o-h and higher than people with similar names whom I know and even have mutual friends with but didn't add.

Given Facebook's creepy nature of suggesting friends your own friends have interactions with, could this mean my gf is messaging him? Does anyone have more info on what could be causing this? Facebook experts please chime in! Note: it only started recently and she isn't friends with him on Facebook.
<bot>: gf's ex suddenly started popping up as a suggested search on my search bar. Wondering if them messaging each other would cause Facebook to do this.