Leaving Him Soon

Before I even confess this I know certain people will judge me, or even not believe my version of what happened. However this IS what took place.
Out with my husband he overheard a young guy stating his mate sat next to him has a ten inch cock.
I'm still not sure why my husband suggested I experience taking a huge cock, but half an hour later after sucking on the young man's enormous penis in our home, I slowly impaled myself on his huge cock.
My husband was drunk and Id had quite a few myself.
Even so I went on to have some of the best sex and the most powerful orgasms I've ever experienced.
Throughout my husband until he fell asleep, was encouraging me to take his cock this way, then a different position and so on.
When he did fall asleep on the couch, I covered him up and took my young lover to bed.
He stayed the night and we had sex over and over again.
Luckily my husband was still fast asleep when the young man left, but not before I gave him a blow job on the bottom of our stairs.
It's been nearly five months since that night and my husband doesn't really have that much of a recollection of it, apart from the pub part.
I've told him HE invited the young man back, which he did, but I lied and said I only briefly sucked on his cock.
In fact since then I've had sex with M who's twenty four, as many times as we can find time and the opportunity to.
M has recently told me he loves me and I know for sure he's utterly infatuated with me. So much so he wants us to live together.
I'm seriously considering leaving my husband and starting a new life with my younger lover, and it's down to my husbands decision that night.