She told me she felt I was selfish with my time, we never did anyhting bonding together, we lived like roomates or "buddies" and I ignored her.
I read the five love languages, and realized quickly that her love language being "quality time", and I absolutely did not speak that language to her.
This is also why I think us actually going out and doing things together now is important.
Before we split, I would have never asked her to go to the zoo with me... Hell, if she asked me if I wanted to go to the zoo I would tell her no, and then spend the day playing video games alone.
So yeah... I think my biggest 180 has been being more outgoing, wanting to get out of the house more, and having a good time when I'm out.
That's helped me, too, cause I didn't like being a hermit...
Thats why in my case I actually think reaching out and asking her to go out with me is a good thing.