Nothing wrong with your admission in the slightest, UB.
A former co-worker of mine has recently ended his marriage of 12 years to his high-school sweetheart. Inseparable and probably very much in love, he went through with the marriage; they both worked and supported the household, had no children, but kept some pets around and went about their business. When I asked him why he decided to call it quits after so long, he replied that even after all these years he still loves his former wife very much... but... he wasn't happy anymore.
He was married at 19 years of age. (Hell, at that point, I had quit pre-medicine and struggled to find a second major that would fit.) She, even worse, was only 16 -- barely a woman. (I'm not talking pubescence; rather, life experiences on the whole.)
I looked at him quizzically, then said, "I bet you felt selfish, didn't you?" He lit up. "Yeah, that's exactly what I thought..." He replied further that he had been a little less than blissful with the marriage for the past few years, but that he knew how much his wife needed him and that he couldn't leave her to fend for herself. He felt terrible for having these "irrepressible" needs; he wanted a life outside of his marriage, wanted to meet other women, and totally dismissing adultery altogether... he just wanted to go out and have a good time instead of coming home to the same lifeless relationship day in and out.
The reason why I'm telling you this is that you have two options: (1) And by no means am I downplaying the love of your relationship, but if your desires to explore are left unrequited for too long, you could get yourself into some serious trouble. Perhaps it's crazy enough to work: having reached a mutual agreement on it, you two can separate and have your own lives for a while. If the love's still there, if you miss her, if you want her for more than the make-up sex, get reunited. Or (2), stay right where you are -- there's nothing wrong with caution...