The way I look at it is you want to have sex with another girl. However you dont want him to have sex with her. Try reversing the situation if your guy wanted to screw another man in front of you without you being involved would you be happy about it? However if your boyfriend loves you it doesnt matter what the other person looks like.... more

Well there is something you can try that doesnt involve seeing a doctor. Have some self control you can train yourself to last longer when your about to go stop wait a few seconds then continue. This doesnt just include sex it also includes masturbating. If that doesnt work then see your doctor.

Well hope it helps