Is it too late for me and my ex?

We were together for 2 years. Broke up, got back together. She didn't feel appreciated so we broke up a second time. remained friends, but I loved her too much to be just friends so I left her life.
Haven't talked to her for 6 months, I still missed her and regret walking out so I sent her an email apologizing for what I did.

She didn't respond.

so I gave her more space and continued on with my life. And a month later I texted her and asked if she would like to get coffee one day.

She texted back and said no.

Most people would give up by now, but I love this girl. She's different from every girl ive dated after her. And no matter what I can't help but think how much better my ex is when I'm with other girls.
I know she still has feelings for me but she's just too bitter about what I did to give me another chance.

Is it too late for me?

I haven't talked to her in personabout how I felt since we were together. And something tells me that writing a letter or texting only gives her a chance to seek advice from her friends.
What's the best way for me to talk to her? Should I pour my heart out to her in person?
cause it seems like its past the point of pretending I don't care.

You broke up, got back together, and she didn't feel appreciated, so you broke up, and now you want to get back together again??

Personally, I think you blew your chance. Look at it from her perspective - she gave you a second chance and you took her for granted, so why would she want to give you a third chance? She probably has more self-respect than to want to get involved with a guy who she'll expect to take her for granted again. Whether you did or not doesn't matter - she thinks you did and she probably expects you to do so again.

You've been told "no" twice now. I'd take the "hint", tough as it may be. The feeling that she's different from every other girl will go eventually. It's probably not a fact but rather an outcome of your feelings for her, which are never rational. Get rid of everything that reminds you of her and try to move on.

I agree. I went through the same thing. its over for sure. i tried to hold on but its pointless. look forward away from her...