She was the perfect woman for you, you were far from the perfect boy for her. You can’t say that you “can’t” let her go because it’s not your choice. If she is done with you then she is done. You need to work on yourself as others have said, if you aren’t a teenager it’s probably worth looking into some type of program for sex addicts because you are borderline obsessive with your desires so much so that you are getting angry for two hours when you only fuck twice a month. It’s certainly not ideal but you are either a teen or you have a problem. It’s your actions that probably made sex less desirable for her, seeing how much importance you put on sex she likely felt like an object and seeing you throw a tantrum didn’t help either. Sex is great, but you can’t have a solid relationship built on just that and sometimes with work schedules, kids, and just life you don’t get to have it as often as you would like and if that’s enough for you to throw away your “perfect person” then that is entirely a you thing that you need to work on. I think a lot of us at one time or another felt we had the one that got away. Eventually you’ll find the right fit so long as you do the work on yourself to attract the woman that actually completes you. Coming from someone that was once a hormonal sex crazed teen that thought sex was the most important thing on the planet, lost the love of my life (at that time) only to realize with a lot of growing up, therapy, and work on myself that that relationship was far from an adult relationship. I have now found my person and the future mother of my children and I love her dearly and on a deeper level than I could even have fathomed at that time.