Am i broken?? i literally cant cum

so me and my boyfriend were sexting and i was close and when he said i could cum, i couldnt. and i tried after for about 15 mins and i just couldnt feel anything. im on antidepressants, and i know it could block orgasms/make it hard to climax. is there something wrong with me?? i told him that i couldnt cum and he didnt really say anything. i feel so bad i ruined the mood too. what do i do? im so embarrassed, i couldve just faked me climaxing or something so he wouldnt know.