My partner doesn’t know that I feel this way. They opened our marriage up when they told me they were polyamorous a year into our marriage. I said I wasn’t comfortable with that, but they started dating other people anyway. It’s been two years of lots of talks where I just cave and put their happiness before mine. It’s my fault for not being more vocal about how I feel regarding them dating other people, but I just feel numb in our marriage. I feel trapped because my partner has bipolar disorder so I know they’d probably take their own life or do something very manic if I told them how I feel. Not looking for advice, just needed to say it.