Okay, so i am a boy 19 years old, have a girlfriend and were way more then happy with each other. We have no issues in communication. We are having sex now for 2-3 Months But i cant ejeculate while we have sex. I can stay hard for more then 2 hours. Without any problems. But i wont ejeculate. But when i masterubate i can do it in 5 mins... And i never really did something with it but now she starts thinking that it herr fault. And that not true ofcourse! Because i feel really safe when i be with herr we talk alot we have no secrets. So now we have sex so long as we enjoy it. En then the last 3-5 mins i mastrubate. But i would love to *** atleast once while having sex. Its just getting in my head and driving me nuts. Even with orale sex. Any idea what my issue is ?