I am 26 year old boy, i am masturbating since from 14 years of age, weekly twice i am masturbating. when i am having sex with a girl, just while wearing condom I got ejaculate, and after ejaculated I made my penis to standup once again (second time), after that once again it ejaculated so fastly even i am not possible to intercourse for a 2 seconds, just I kept my penis inside vagina it got ejaculated and then once again 3rd time it didn't standup she tried for 45 mins to standup my penis but it didn't. She told that if you marry a girl that girl will be a have a affair with someone because you can't do for 2 second also. I am depressed please give me a solution I'm not married ,but after marry how I can I satisfy my partner.