alec's a cocky smart mouth, he knows he's attractive and he uses it to his advantage. he flirts, easily, but he's a genuinely nice person too. he cares a lot at his core, even with his tough guy shield. 

he knows you better than anyone, been there for you for as long as he can remember.

he comforts those closest to him with ease, it doesn't take him all that long to do so. he values having company and not, well, being lonely a lot. he's a little hot headed, but he's a total lover.