u/Prudent-Listen3034

I hope this comes out in a way that makes sense. I'm in a monogamous marriage. We've been together for 15 years, and have a child together. I came out as poly almost 5 years ago. It was rough at first, but through therapy, both solo and as a couple, it got easier to grasp. We haven't opened the marriage yet because I can't seem to take that step. I feel overwhelmed that the second I try, our relationship won't last (we have discussed that possibility numerous times), and everything will fall apart because of me. I was curious to see if anybody else felt that foreboding sense of weight on their shoulders and how they dealt with it? I'm massively struggling. Thanks!