He is usually cold, condescending, selfish, and immature, but at the same time it is commonly not intentionally hurtful and is in a well-meaning way; He just doesn't know any better.
He does have a softer side, as he does care about his friends, and loves his mom, grandma, and girlfriend Amy, though he often insults them either about their intellect levels or different opinions.
He shared an apartment in Pasadena with colleague and friend Dr. Unlike his equally geeky friends, Leonard is interested and quite adept in building interpersonal and social relationships with other people.Celebrities such as Stephen Hawking occasionally appear in cameo roles as themselves.(Johnny Galecki) is an experimental physicist with an IQ of 173."There are hidden rules on sending the first message," the host of "Sex with Emily" explains on her site.Now, you may think calling a girl who grabs your eye pretty is a good thing, right? "I’m sorry to tell you this, but telling a girl she’s cute in the first message does not fare well.