Why does it hurt so bad?

Like Vezna said, it's fine to let him know you miss him but... please don't smother him, no one likes a stalker.

Remember your nice guy friend who kept calling you and eventually got annoying? Don't be this person.

Spice women SPICE!

You shouldn't smother him because that will push him away. You should be a little independent.

You should feel comfortable to tell your friends how you are really feeling, and the people closest to you who will understand, even like your mum or sister. However when it comes to him, don't be so full on, tell him how you feel but without the tears and moping. Sometimes however this cause boys to become a little full of themselves and they begin to take you for granted because they think they are always going to have you around. If you suspect this is happening then back off, have fun around him, smile and be happy and ignore him, don't make it obvious though, just make out like you have something better to do than talking to him, if he calls your house phone, tell whomever answers to say you are out with friends, even if you are home, that way he will miss you being there for him and realize how much you mean to him and begin to appreciate you.