i have been masturbating to porn since i was 12, now iam 22 and just last month had my first sexual experience with a girl and it was bad. i couldn't keep my erection for 5 min. i could get an erection being with her (though its not really strong) and as soon i start penetration i lose the erection. also for the last 2 years i have noticed a drop in my sex drive and erection compared to how they were before. also one other thing, for the last 2 to 3 years i have noticed an a lot of increase in the level of pre cum that i produce when i am horny, not sure if that is caused by over masturbation and if it is the cause of my bad erection and low sex drive. maybe the problem is psychological but how come i had very strong sex drive 2, 3 years ago? and how come my erection is not strong and it doesn't last that long when i used to get erections almost all the time?? its strange cause i now get erections weak once and i don't feel like having sex... iam really confused about all of this