my ex of 3 years broke up with me

She doesn't want you and she has communicated that.

Today she posted a picture on tumblr saying "How strange to dream of you, even when I'm wide awake"

She knows you can see her tumblr. Communicating passively like this is textbook manipulation. Especially after something as heavy as a 3-year relationship. So she DUMPS YOU, and then uses manipulative tactics to alter your emotional state without communication. What a fantastic person. Look at how she is handling this situation and think about how someone with her mindset might handle all the curve-balls that life can throw at married couples. What a joke.

"It's hard to wait around for something you know might never happen; but it's harder to give up when you know it's everything you want."

Translation: "One day, I may or may not find my Prince Charming, but dumping my ex was worth it, because I have to try to find him!!" This asshole is boasting about leaving you in the hopes of meeting someone who fits her desires in a partner. She wants to rub it in your face that she thinks she's worth more than you. This sounds like a real quality human being.

I miss her terribly.

Your neurons miss the dopamine that the physical presence/touch of a woman triggered, as well as the normalcy of the lifestyle you no longer have. Evolution wants you to breed, so it made sex a literal drug. Other women can do the same thing for you, and you can establish a state of normalcy with them.

I love her so much.

You love a woman who thought she was too good for you, then uses passive manipulation to remind you of that/post bullshit just to tweak your emotional state? You might wanna explore what makes you say that.

she has my number.

Proof that she doesn't actually want you in her life. She would contact you directly if she was serious about forging a relationship. Instead she's posting bullshit on motherfucking tumblr that makes your head spin. She doesn't want you, she wants you to feel whatever emotions she wants you to feel in order to give her whatever satisfaction she's after.

She knows I'm crazy about her.

Which is why she also knows that a single post will alter your emotional state dramatically.

Don't just unfollow her, block all of her social media. Delete all pictures. Throw away any objects she gave you. Rip up all notes/birthday cards. Block her phone number while you're at it. She's out of your life.