<human>: I've made the decision and nothing she can say or do will change that. We've had many discussions. The relationship has been flawed from the beginning and I clung to my romantic ideologies for too long. I'm just really struggling to actually walk out, mostly because I know how much it will hurt me. I know she will be OK (because I was always more emotionally invested - at least that's how she presents to me) and, in any event, she has a fantastic family to take care of her should she need it. My question, reddit, is whether it is OK to simply walk out on someone you love. I feel we have spoken about the issues we have and it is usually a circular conversation going nowhere. There's no particular fault for the relationship not working, there's just no passion. Your thoughts would be appreciated.

Condense the text into a few key points
<bot>: advice on best way to break up - speaking (long/short), writing (long/short), walk-out without saying anything.