3rd times the charm

ok so i went out with this girl for 6 monthes. Which has been my longest relationship yet, and through out the whole 6 monthes i broke up with her twice to end it. Dont ask me why because im still confused on what i want. I kept trying to go with my normal life from day-to-day just focusing on getting done with the day. Never really stopping to smell the flowers or just enjoy what i have. When i thought about it i really didn't know how i felt about the decision's ive made in the past. I've been up and down but no matter where i went when i was with her she always stayed with me and held me close to her heart. I guess i took her for granted and now i'm the one in pain. I'm still in love but is she?? she's now been going out with another guy for a couple of weeks now. I'm dying on the insade and i dont want him to hurt her, even though i did myself i never stopped loving her. She has my heart but she doesn't even know it. I dont see what she see's in this guy she's dating. He's ablow out and just a poser. I dont want to make her think badly of me so i just back off about him and just focus on her. I dont want to start anything between us cause we've never really gotten into a big fight cause we always agree. We're so much the same i'd give anything for her, trust me anything. I want to be her everything and anything she want's me to be, but she keeps blowing me off. Is she testing me or what?? cause if she is it'snot funny and i dont wanna take it any longer. She's mine one and only.