I agree with bertuno. She knows who he is (the emotionally distant person); He is responsible for the distance in the relation. She did her best, trying to make something of it (she stared at the sun, it's painful and unhealthy). He couldn't attach himself emotionally, but it's not because he doesn't want to. He wishes that he could, and wishes that it'll all be alright in the future.
I agree with bertuno. She knows who he is (the emotionally distant person); He is responsible for the distance in the relation. She did her best, trying to make something of it (she stared at the sun, it's painful and unhealthy). He couldn't attach himself emotionally, but it's not because he doesn't want to. He wishes that he could, and wishes that it'll all be alright in the future.