Well... my thinking would be that if you're comfortable with the way you're living your life, & it's not harming anyone, then perhaps there's really no problem here. However you mentioned your 10 year relationship with a woman you say you really love. Of course I don't know what the status of that relationship is. If your relationship with her is more what is sometimes referred to as "friends with benefits", & both of you are okay with the other having additional relationships, then perhaps there's no problem there either. But if the woman you mentioned is assuming the two of you are in some sort of committed relationship, & at the same time you're cheating on her in all of these various ways, then I'd suggest there's a problem. And in that case, it seems to me, you either need to cut ties with this woman & go on enjoying the way you're living your life or figure out some way of getting to the bottom of what you're doing. Unfortunately you've already ruled out therapy which is the normal way most people would approach this type of task. So, off-hand, I'm not sure what else I could recommend. Here's a link to an article, from Psych Central's archives, though on the subject of sex addiction. The article provides links to a number of additional articles on the subject:

What Is Sexual Addiction?

Best wishes...