I really like my partner, and they haven't done anything wrong, but I want to leave anyway. We got together at the beginning of the pandemic and spent the first 6 months of our relationship essentially long-distance (even though we live near each other) because I'm high-risk and didn't want to get sick. They've been nothing but lovely to me but I've been going through some stuff emotionally/mentally lately and I don't know if I can be in a proper relationship when I'm still trying to fix myself. That on top of an imminent sexuality crisis (thought I was ace, but now I'm not so sure) has made being around them incredibly stressful because I feel like I have to put on a front or pretend to be happy when I'm not. Our one year anniversary is tomorrow and I'm just dreading going to dinner with them because I know they're going to be excited and I can't muster the same energy. I had a breakdown the other day trying to get them an anniversary gift because I chickened out with my big idea and what i got felt really inadequate and like I was going to let them down. I know that being in a relationship right now isn't doing my mental health any favors, but I feel really guilty about wanting to break up because I don't have any good reason except for my own issues, and I know it's really going to hurt them. I also feel guilty over looking forward to a couple years from now when I'm living in a more progressive area and able to find someone who really gets me. It feels a little bit like we ended up dating because we were good friends and two of the only trans kids in our town, and I'm really not happy with them anymore even though they haven't done anything wrong. I don't know how to get past this or how to tell them, because I really do care about them, just not in the way I'm supposed to.
tldr; due to a variety of personal issues & revelations, i've fallen out of love with my partner of a year and not sure what to do