The safest solution for you would be to masturbate with elaborate fantasies of hot sex with a cast of thousands.
Question all authority including monogamy that is basically a religious construct that allows a few to manipulate many.
Truth is that monogamy is primarily practice by women.
The sexual double standard will not work in any kind of a open sex style.
I need to masturbate more and spend more quality time with myself.
We all have insecurities. The idea is to release them and more fully enjoy life.
Ultimately the best scenario would be to establish an open relationship but that requires a fairly secure person.
The best case scenario would be discussing this with your husband and exploring the polyamory community.
I believe women are far more sexual than men.
The best possibility would be to keep your own counsel and continue to enjoy sex outside your marriage.