Suddenly unable to orgasm

About a month ago my bf and I were doing organs denial. He left for an hour instructing me to keep myself on the edge without cumming. Task completed.

When he finally let me cum, I wasn't able to reach the peak. I tried for another hour and got super close and it left my clit throbbing like my usual orgasms but it felt unfinished.

I went a few weeks without masturbating and tried again a week ago and had the same result. I tried yesterday and still the same got to the edge but couldnt pass it.

Am I just broken now or is there a fix? I don't have a very active sex drive, but with this happening I've felt horny a lot more frequently.