Feels no spark anymore.

Some me and my GF are splitting up after 5 years, with 6+ plus years being friends beforehand. While, the last 2 years we have lived together.

We bought and moved into a rundown house, that needs a complete overhaul, which is basically a full time building site. Yet we also have 3 dogs and both have full time jobs.

We nearly broke up 5 Months ago, (left and came back) for the same reason we are splitting up now. My gf feels no spark, but love and cares for me. I've stressed to her that we both have to work together for this to work and that it's normal to feel like that at times.

The past 5 months, I've changed my ways for the better to prevent bickering, disagreements, booking events for us both, really putting ourselves out there after being Lockdown etc and to be honest it's the least stressed I've ever felt and have enjoyed all the good moments.

However, come last week after a little argument due to the house and one of our pets, she's changed her mind again and said she can't go on. Yet the week before, she'll say, 'I know when you're going to propose to me bla bla' and this is the week before and not just the once? And the day before I came back from my holiday, she's basically crying about how sorry she is about the way things are and that she loves me so much.

So now she's moving out, I'm really confused..

She loves and cares for me, but has no spark feeling towards me anymore. But if she loves me or if our relationship meant anything, she'll do her part to help fix this together?

What should I do?