Need some advice

I have been seeing someone who I love for a few months (I will call her Jane for the purpose of privacy). When we got together Jane was already seeing someone else and after we got together she started dating another woman for 3 total partners (4 people involved altogether)

A few weeks ago I realised that I am probably not polyamorous but I still had no issue with Jane seeing other people. A few days I realised that with me being mono and her poly, some of our goals/desires for our relationship were probably not aligned and I was right. I very much want to be able to get married and live with my spouse and have that 1:1 relationship/intimacy which she does not.

We spent some time discussing this and decided to split up. No argument, no anger, just a fundamental incompatibility. But I love her so much. I don’t want to be split up so I have been trying to think of a way for us to both get what we want out of the relationship.

I’ve landed on something I wanted to run by here because I am fairly new to polyamory and wanted advice on whether or not this is an okay idea. Idea: Me and Jane get back together with the understanding that I would be looking for another partner who does share my goals. This would not be putting one partner over the other to be clear. This would allow both of us to have our goals achieved whilst still getting to stay together.

Any advice with this would be very much appreciated. Thanks