I cant have an orgasm unless Im masturbating

[confusedman]

i have the same issue.there are the following options
1)you may have a prostatitis infection(but you are too young for that and you said that you can masturbate
2)it's mental.you think that you can't cum and you finally you can't

3)try not to masturbate at all and only have sex with her.in time you will be able to ejaculate and the ice will break after that point.