1. Your mom.
She's been the one you've gone to for every boy problem, but now she isn't just in the other room. It's hard to accept that she isn't there physically when all you want is a hug and a shoulder to cry on.
2. Your pet.
Everyone knows that after a boy problem you just want to cuddle with your pet and watch sad movies all day.
3. Your friends.
Sure you've made new friends wherever you've gone, but they don't always know what makes you happiest when someone has hurt you like your friends back home do.
4. Your spot.
Who doesn't have a little bit of Sheldon Cooper in them? Almost everyone has that spot in their hometown that they go to when they're upset.
5. Him.
Even if things ended on good terms and you're still friends, you're still going to miss the intimate things like holding hands or kissing. Those don't really stick around after you two have called things off.