Is it normal for anxiety to ruin a relationship?

I just came down to the conclusion that the reason why my relationship with my bf is so toxic is because of my anxiety. My anxiety ruins everything. I knew it had to do with me but I couldn't pinpoint exactly what. But I just read an article called "9 ways your anxiety is ruining your relationship" and I thought, wow there's such a thing? and all the "ways" made sense. It's sad but it's true. My anxiety has made me look and feel insecure which as a result, has cost my relationship with this guy who Im really crazy about. He might be good for me, plus he makes me super happy, but my anxiety might not be good for our relationship, therefore, should I break up with him? I feel like its unfair to me to just let him go because of this issue of mine. So it can go both ways; my anxiety can kill the mood by not wanting to do particular activities together, therefore, it just spoils the fun. However, he could also get fed up with the way I am sometimes and be kinda demeaning which is of course no help at all for my anxiety. Besides this issue, I look at everything else thats been great between us and its cause I have no anxiety during those moments. But its something I can't control like I want to. I hate dealing with it and my relationship makes it worse. Again, I think its unfair to cut it off just cause of my issue but it could be for the better? I don't know what to do.