Dude, we warned you. I know it is SO easy to sink into the hole again...believe me. But what you've told us about her conversation with you she basically screamed "I'M USING YOU!" right in your ear. She just wants you to stick around so she isn't lonely and looks to you more as a companion/potential tool-so-her-ex-will-come-back.
Get out man, just ignore her, she's messing with you and you're falling for it...I know it's easy to fall for it but be strong.