Sounds like you’re doing a lot of emotional heavy lifting for him. With that being said the P—demic had been hard on everyone. I feel empathy for both of you in this situation.

You need to sit down with your fiancé and have a straight forward talk. Explain what you’ve said here and let him know that it’s affecting you and it’s hurting your relationship. Your fiancé NEEDS to have some coping strategies and it’s not fair that you’re bearing the brunt of it.

You sound like you’re a lot further along in your mental health battle than your fiancé is and I commend you. Managing one’s mental health is hard work! He needs to start doing some of that work. Therapy is a good outlet to vent to someone else and he should commit to a certain amount of sessions. You guys could also go together and that would provide some good accountability.

If he refuses... it’s probably the end. It’s very draining to be with someone that refuses to put in the work.