Females only?

I wouldn't do it unless I told the guy that I was sorry but I didn't like him back.

Whoa wait I missed the last part, so if she said she liked you and then left you then I say get over her. I know it will be hard but obviously she's playing you or this other guy and isn't worth going after.

She should have been up front with you about it, but she wasn't and she's moved on, and so should you, don't stress over it, just be glad you weren't in a long term relationship before she sprung it on you about this other guy. It's possible I guess that she liked you, met someone she liked more, and decided to pursue that, but she should have been grown up about it and just said hey i'm not interested anymore. Moooove on Kramer, she's not worth it ;>

I wouldn't do that cause that just a b*tch!...

I would totally just blank her out your life...she can't have meant it when she said she liked you because she wouldn't go with some other guy! Unless she wanted to make you jealous...but yeah...I would totally just move on theres plenty girls out there =D There not all b*tches!...

she obviously she deosnt really like you. you should dump her and kick her out of your life.