My interpretation is that it's about a person (him) whose relationship has ended & their ex (she) won't leave them alone.
"No more love to purchase;
I've invested in myself"
He has decided he doesn't want to put effort into getting this girl's love anymore. He finds it more sustainable to give himself that effort & love.
"You know nothing about me;
Keep opinions to yourself"
The ex is probably criticizing him based on the person she judges him to be.
"No more complications;
Everything's just swell!"
The relationship's ended, & he considers this as the turning of a new leaf. He's very happy to be out of the relationship.
"No more obligations,
There's nothing more to tell."
He has no more obligations to improve the relationship or please his partner, & tell her every detail of his life.
"When I bleed, I relieve you of your pain"
When he shows his pain, or she knows he's hurt, it gives her relief; whether it is because he's sharing his sensitivity by telling her how sad he is that the relationship has ended because the fighting was traumatic, or because she was purposefully poisonous towards him.
"Please give me a reason
So I can shut you out"
He wants to have the strength to not respond to his ex.
"Though your heart is bleeding,
You left me with no doubt"
Even though it pained him to hurt her, his decision is final - He broke-up with her, & he doesn't regret it.
"Give me segregation;
Give me back my health"
He wants to be apart from her so he can be happy and lead a healthy life.
"Take your observations
& turn them on yourself"
He doesn't want to hear what his ex has to say about him nor the break-up, or anything from her really. She has to deal with it on her own.
"When I'm running scared - that's when I need to know
That you'll let me go"
He's actually scared of his ex because the fights were so hurtful & unpleasant, so he avoids her at all costs. She needs to leave him alone.
"When I sleep, all my dreams turn out the same"
Sleep & dreams aren't his happy place anymore. They're repetitive nightmares.
"I can't believe you won't let me go;
Let me live my life alone!"
He just wants his ex to leave him alone so they can move on, & she won't stop trying to seek him out.
Heavy stuff, but that's pretty much the story-line I visualized when I listened to the lyrics.
My interpretation is that it's about a person (him) whose relationship has ended & their ex (she) won't leave them alone.
"No more love to purchase; I've invested in myself" He has decided he doesn't want to put effort into getting this girl's love anymore. He finds it more sustainable to give himself that effort & love. "You know nothing about me; Keep opinions to yourself" The ex is probably criticizing him based on the person she judges him to be. "No more complications; Everything's just swell!" The relationship's ended, & he considers this as the turning of a new leaf. He's very happy to be out of the relationship. "No more obligations, There's nothing more to tell." He has no more obligations to improve the relationship or please his partner, & tell her every detail of his life.
"When I bleed, I relieve you of your pain" When he shows his pain, or she knows he's hurt, it gives her relief; whether it is because he's sharing his sensitivity by telling her how sad he is that the relationship has ended because the fighting was traumatic, or because she was purposefully poisonous towards him.
"Please give me a reason So I can shut you out" He wants to have the strength to not respond to his ex. "Though your heart is bleeding, You left me with no doubt" Even though it pained him to hurt her, his decision is final - He broke-up with her, & he doesn't regret it. "Give me segregation; Give me back my health" He wants to be apart from her so he can be happy and lead a healthy life. "Take your observations & turn them on yourself" He doesn't want to hear what his ex has to say about him nor the break-up, or anything from her really. She has to deal with it on her own.
"When I'm running scared - that's when I need to know That you'll let me go" He's actually scared of his ex because the fights were so hurtful & unpleasant, so he avoids her at all costs. She needs to leave him alone. "When I sleep, all my dreams turn out the same" Sleep & dreams aren't his happy place anymore. They're repetitive nightmares. "I can't believe you won't let me go; Let me live my life alone!" He just wants his ex to leave him alone so they can move on, & she won't stop trying to seek him out.
Heavy stuff, but that's pretty much the story-line I visualized when I listened to the lyrics.