I guess it depends on the law where you live. Is he paying anything towards the house you both own that he’s living in? Why should he live there rent-free, if that’s what’s happening. I’d see a lawyer asap. All assets are usually considered as part of ‘the pool.’ He’s got 2 sources of income coming in. No offence, but at aged 67, you must be getting close to retirement? Your future needs therefore also need to be considered (financials/housing/medical bills etc).
He sounds awful. I’d look into ousting him legally from the home and selling it to divide up the proceeds, trying to get a proportion of his retirement and if there’s an option to (temporarily) reduce your hours/income so he can’t claim spousal maintenance, I’d think about doing that too. (Speak with a lawyer though, as I’m not a lawyer and am just hypothesising). Also-depending on the law where you reside-is there potential to sue him for emotional harm due to repeated cheating?!!!