Can’t help thinking about cheating

My husband and I recently went out with my friend and her younger boyfriend, as they were celebrating her boyfriend’s 21st birthday. After plenty of drinks flowing all night we all got quite drunk, and ended up going back to my friends to carry on the celebration, where my friend suggested a game of truth or dare.

So we all carried on drinking and playing, after a while we were all in different states of undress, but my friends husband was totally naked and I have always appreciated a good looking guy when I saw one,but seeing him naked with a large semi, I was just intrigued and fascinated by his large gorgeous looking young cock.

For the first time in my life I was mesmerised by a cock, other than my husband’s, my friend couldn’t help but notice my fascination for her boyfriend’s cock, and when it came to her asking me truth or dare, I was shocked when she dared me to give him a bj for his birthday. I said I couldn’t do that, but after pressure from her and my drunk husband to carry out my dare, I gave in and gave her boyfriend a birthday bj, to their cheers.

I had never done anything like this before as my husband’s was the first and only cock I’d ever sucked, but I loved it and have to admit I had an unbelievably strong urge to climb on it and fuck him, but I didn't have the nerve to do it, and I didn’t know what sort of reaction I’d get if I did. But since then I can’t help thinking and wondering how it must feel having my pussy stretched out by a big fat cock, that’s not my husband’s, is this wrong?