A guy who is shy at first, but once you get to know him, is a friendly, funny, generous, and overall social person to you depending on your attitude towards him and others. Jacob is a dude who shines his brightest around those whom he considers a friend, as he tends to get confident when around them. Jacob is philosophical and wise even if he denies it due to his modesty. Jacob might be made fun of by some, but is something just barely short of an attraction towards reasonable and similar people who see the world like he does.
Random person: Hey there!
Jacob: Oh, hi...
Random person: Wanna hang out at lunch? I'm pretty bored and forward.
Jacob (With an obvious demeanor change): Sounds pretty cool. So, what's your name?