¿Imposter?

Dave messaged me on fb msg . . he mentioned names eye remember fondly . . . eye was inspired 2 share my memories of the ppl we know in common . . . no reply . . eye looked at his profile and it’s light  . . but . . looks authentic . . iow created by the ¿Real? Dave  . . eye feel only Dave wud know the names mentioned . . yet now eye’m not sure if it’s an ¿Imposter? . . eye invite any1 who knows both of us 2 contact me and we’ll sleuth this out