Half an ex

Someone who you thought liked you and thought it was all going somewhere, only to find out the person you spoke to didn’t label anything and didn’t feel the same about you.

Instead of making a fool of yourself and saying that you guys dated (when the person you spoke to would say that you guys never dated), well, behold the newest definition - half an ex!

Her: I can’t believe you would lead me on like that!! I thought you liked me.
Him: Well we never agreed on labels. And you’re not an ex so
Her: You’re right. We’re not exes, and thank god for that! You’re half an ex!