Family Love

A couple of months back my husband my son and myself all went out to celebrate my sons nineteenth birthday.
My husband as usual got blind drunk, but my son and I only had a few drinks.
Back at home my son and husband drank some more with my son getting more drunk himself, before my husband staggered up to bed.

About half an hour later I followed my husband to bed, but he wasn't in our bed. Figuring he'd gone into our newly refurbished guest bedroom, I went to sleep.
I was awoken by a really large feeling hard throbbing cock sliding up my pussy from behind and I could smell alcohol on his breath.
He fucked me reaching round to play with my clitty which he knows I like and I was soon orgasming.
After a few more minutes and just before he came inside me I had my second orgasm as his cock erupted up my pussy.

We both lay there until his cock softened and slipped out and I just marvelled how my husband could be so horny when he was drunk.
That was until I heard "Your pussy was so went Anna".
Anna is my sons girlfriends name.
I turned over and sure enough fast asleep was my son lay on his back, totally naked.
I couldn't believe how big my sons penis was and couldn't resist touching it. He moved and then turned over, so I got up and walked into the guest bedroom but my husband wasn't there.

He'd gotten into our sons bed, which used to be our room before we had two of the bedrooms refurbished.
I left him asleep and went to the guest bedroom and tried to sleep, but I couldn't stop thinking about what had just happened.

The following morning my husband had a huge hangover when he joined me in the kitchen, but my son was already out on his morning run.
When he got back in he smiled at me, but said nothing. However later on when we were alone he said this "Sorry about last night. I thought you were Anna". There was a pause before he added "But i really enjoyed it, hope you did".
I wanted to say it was wrong and we can't ever let it happen again. But what I did say was "It was beautiful, I love you son".

Nothing has happened between us since, but we've both wanted it to. My son keeps telling me he wants me to be happy and I know what he means. And I keep telling him it was a one off, but I can't stop desiring him and he knows it.
Next week my husband is flying over to Portugal to play golf with his golf club mates. He's going for five days and I'll be alone with my son.
My son has already told me he'll be sleeping with me, and I haven't told him he won't.