I lost the erections with real girls

Hello my dearest friends. Im from México. Actually I have 30 years old, I have the PMO adiction since the 16 years old when a cousin call me about the M. At that time, I had my first girlfriend. She was a really hot girl (she wasn´t a bombshell but she was very very hot and seductive, mainly in her attitude). Literally I was not able to have an O, and my cousin call me about M to last less in the bed, because my girlfriend felt frustraded for the situation. I started to M with frequiency and I started to view P. Then everything went to hell, my erections became weak, then literally I was not able to maintain erections or even have them. She cheated me with another man, I fell in depression and the problem got worse.

Time after I started a relationship with another girl (at the 21 years old, she was my girlfriend for 3 years and after my wife for 3 years). She is really hot even now, but when she was young she was the body of a top model. I thought that since she was very sexy, I would not have to M or view P, but the problem never left. When I got married the problem got bigger, nights whitout sleep in front of the laptop, time lost and finally after she cheated me (whit another problems included, because that woman are a compulsive lier) I divorced from her. Recently I feel bether, I started to do exercise, focus in my goals, and searching my independence. I started to date a girl (younger than me, pretty and sexy) but when I touch her I dont have to do a erection, and this situation made me feel insecure and I finished the relation.

Phisically I always have a ache in the penis and the testicles, as if they were very sensitive. The urologist has discard a lesson in the inside of the penis, and he think the ache is psychological. So, since 3 months ago I started to try with prostitutes (In my hometown the price is about 10 dlls for 20 minutes) but the problem is similar: difficulty for maintain the erection, ache in the penis after the sex and a guilty feeling after this.

I feel that insecurity is not allowed me to start a relationship or find for casual meetings, but I need to lern about.
Sometimes I feel desperate or sad because I want to meet women, I have improved a lot in my attractiveness and my personality, but I feel a lot of anguish for the physicality of keeping my erections.

Somebody help me with his experience please.

Sorry about my English