Last week I facebook message a friend of mine who I had a crush on in high school. I told her I was visiting her college (for grad school) and asked if she would like to meet up for a bit. She responded in this long message saying it was great hearing from me and she couldn't that day but would love to (she said love three times) during our Easter break (we live near each other). She also gave me her number and told me to call her.

I did call her (and left a message to call me back) on Wednesday and she still hasn't called me back. Break is over by Monday so should I call her again tomorrow? Her facebook message really gave the impression that she was interested so I don't want to give up.

First of all.
WHY YOU ARE MAKING THIS INTO A CASE OF: oneitis?

if she doesn't reply too your messages or ask again then F! her, she lost a great guy.

make other plans with other girl's for this weekend do something fun.

Don't be on the computer screen just thinking about this one girl.

if the girl wanted too meet up with you, she would have.
well most likely.

and the word love? that doesn't mean anything.
she never saw you in person a long time, how could she say love?

My suggestion is to see if she message you back.
Make other plan's, and see what happens.

ignore her attempts to ignore you;

in other words, never ever bring up the fact that she didn't call you back.

Just give it some time and try again as if nothing happened.

ur gonna regret it later. for all you know, she forgot to call you back. i'd hit her up one more time to try it out. ur not gonna come off as desperate if you invite her to a party or something.