Need Help With What This Women Wants From My Life?

Ite so theres this girl that at first i liked. she had a bf but when she broke up with him i asked her out on some dates. we never hooked up cuz she wnated to take things real slow after she just got cheated on from her ex. i was cool with that so we were together nothin official. i find out the next week she spent the night at her ex to get her stuff. i got fed up cursed her out we never talked again. i later find out she was actually pregnant with her ex. didnt think much of it i already droped her got her out of my mind. a month goes by bam she requests me on facebook. like an idiot i start talkin to her again and we hang out. i find out her ex, the father of the baby abandoned her, so i kinda comforted her.we dont hook up again cuz i didnt wanna get attached again especially since she is pregnant. literally on the 3rd nite we hang out she hooks up with this guy. ill admit i did get jealous i do really like her but in no way did i show this. i kinda just said i gotta go somewhere and left but i didnt make it look like i was mad or jealous. next day she tells me sorry for hookin up in front of u and im like its all good congratz im happy u found someone blah blah. she kinda didnt really say anytihing back and was like o i see. she didnt even thank me for congratulatin her. next night the most bizzare thing happens. she ims me and is like can i have your friends number. im like what for, she's like just to hang out. im like ok so i give it to her and im like btw he is single (jokinly of course). she's like na im not into him like that besides i dont want a bfn at the moment. i responded by sayin i kinda figured that i mean u are pregnant. she gets angry and im like calm down. so im like jokinly again tellin her ill look into him for u. and she's like na i already got someone. now im like really confused cuz she just told me she dont want a boyfriend. im like what are u talkin about. she responds me and the guy that hooked up are now together but not official. i didnt say anything cuz i got interrupted by my mom. i was afk litterally 2 minutes and she ims me back askin do u have a ****** problem with that? and im like no lol was talkint o my mom. anyways my question is wtf does this girl want from my life she texts me still everyday and is very flirty around me least i think so. she denies ever likin me even though we were together in the past. my friends say that she still wants me but i wanna hear from u people that might have past experience with this stuff. does this girl like me and is tryint to make jealous, (i mean girls would u honestly get a bf just to make a guy jealous), is she simply out of her mind, does she just wanna really be friends even though all the wierd behavior. i really just wish i could get in2 this womens head