I’m a heterosexual man who craves homosexuality

I am a 61-year-old heterosexual man with lot of desire for sex. I married and enjoyed sex as  a true heterosexual. Parallel to that,  over a period of time, I began liking handsome men, and mentally started enjoying virtual sex with them. In the process, on few occasions I even enjoyed homosexuality with few men. But of late, while still enjoying the heterosexual life, the desire to have sex with men I consider handsome has been growing, which is disturbing because I can not really go to them and have it. I am seeking your advise on this.