Losing a friend. Advice - Hexagram 43.3.5

Hi,

I´ve been totally reckless and irresponsible towards a very good friend of mine. She's in my life for almost 2 years - we've been seeing each other during this time, but it has been always like that: I usually imposed the way and time for us to meet. We haven't delevoped our relationship. We've actually never talked about it.

But we've had a conversation two days ago - after 2 weeks fo no contact - in which she decided to put an end to our relation. She said she was suffering too much to continue with this routine. She showed me all my flaws, the moments where I somehow showed her our relationship wasn't that important to me. She said she was tired of having a superficial relationship.

I didn't know I was hurting her. I thought everything was ok. But now I know I wasn't taking care of us.

Now I think I really lost someone important in my life. I feel ashamed for knowing this just now. This all sounds immature, but that's the way I did.

I asked the IChing for advice, and I got 43.3.5 to 54.

This seems confusing to me. The hexagram seems to show I should do something - our make a decision on something; but it seems there's more to it in those changing lines.
Actually, I AM confused: I wish I could write her to make amends and really try something out together, having a stable relationship and so on; but at the same time I don't know if that's what I should do; sometimes I think I should have some time to think why I was so irresponsible towards our relationship.

Sorry for my poor English! Hope I was clear.

Thanks for any advice on this reading!