Sorry if this sounds flippant but you're 24, attractive, and have no kids involved, and your H wants to walk away and/or use you as plan B ... if it was me, I'd walk.
Different if there are kids involved.
Me: 50, MLC/WW 45 Young kids Nov 2015: BD1 Apr 2016: BD2 Jan 2017: W filed Feb 2017: D final