I lost my dignity chasing after her?

So I've been getting really hot and cold treatment from this woman for years, yet I kept going back to her one way or the other. She takes me to the moon in how special she treats me, then suddenly she barely responds to my texts if she does in the first place and deletes the whole text conversation from both sides making it as if I don't exist. Now I'm really hurt and I feel like I had done something bad for my self-respect and continued tolerating her behavior and go on to repeat the same mistake. I have made progress once with a full year of no contact and I stumbled upon something that made me reach out to her and destroy all that hard work of no contact for a full year. How do I gain my self-respect and dignity back after chasing this woman for so long? She gives me such sweet talk enough for me to stick around and then drop me like a hot potato. It hurts so much! I know she doesn't care about me it doesn't matter what she says it's her actions that speak. And now I texted her yesterday and she didn't reply. Now I'm pissed at myself for this wasted time and all the chasing I've done... I wanna cry...

I lost my dignity chasing after her?
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