Isn't this stalkerish?

if you know a guy and yall are close friends and one of his other friends(ur bf to) give you his number....if u called it that wud b stalkerish right.....so wudnt u just call u and his bestfriend and three way.....i wudnt call him b/c he didnt' give me his num...if i called him out of the blue and he didn't give his num to me , wudn't that be stalkerish