You have a male friend on FB.
Folks comment pretty regularly on your wall.
The male friend doesn't.
Instead he is always in your private messages saying things he could have very well said on your wall.
You've side eyed him before and noted that he does it.
Would YOU ever question why he does this?
Do you think it's worth mentioning?
Do you think guys know that we think it's a tactic for them to create some level of "comfort" with you buttering you up for potential possibilities?
How would YOU handle after you noticed it?