Dear user, Thanks for writing to HCM. I can understand your concern about inability to have ejaculation with your partner. Ejaculation of semen in men and vaginal contractions in women are not essential to experience orgasm. If you can experience the heightened pick of arousal during sex (pleasure of orgasm) there is nothing to be worried about. Situational anxiety, partner related anxiety, performance anxiety, and pressure to ‘perform’ rather than to ‘enjoy’ is common and may be in your case. Your ability to ejaculate outside vagina (during masturbation) points towards situational anxiety during sex. I suggest psychological counseling with psychiatrist. This can be treated successfully. Wish you good health.