Should I tell him?

I think one time sex should always be kept private. But if you find you are in love, and want a long term relationship with her, then you will need to mention it eventually. Why don't you wait and see? You might find you don't like her quite as well as you thought 6 months from noew.

No way! I wouldn’t tell him no matter what!

See if looks like a relationship is going to develop. If it is, then go for it. No reason you should have to live in secret if it's a consenting relationship and you're both single.

Some things are best left unsaid

What? Why would you do that? They don't need to know, unless you decide to bring the relationship out in the open. Until then spare the kid the confusion and embarrassment.

Should you tell whom? The friend of your son, or your son? In either case, I don't think it matters that either of them need to know. What happens with you and that other woman don't need to be the knowledge of others. Of course your relationships with each person is unique and so is how you share things with each other. So it's still very much your call. I could see you telling your son, but the other woman should probably be the one to tell her own son.

Hmmmmmm? Probably not.
What he doesn't know won't hurt him

Why would anyone think that is a good idea?

what reason in the world would there be to tell this information?
keep it to yourself.

Hmm sounds like a sticky situation but can be handle with thoughtful conversation.

Hell to the fuck no. Don’t mess up his life like that. Keep it to yourself.

Would you tell him if you had slept with his father. I don't think that kids need to know everything that their parents do. Just like parent's don't need to know everything that their children do. Lol I don't want to know about my kids sex life.

no

You are both consenting adults, enjoy one another's bodies as much as you like. Both of your sons need not know unless you wish to tell them, but that has to be an agreement between you & her.

No, don't tell him. That's your thing, not his business, and wouldn't be especially welcome knowledge.

Why would you tell him? It's not his business. Keep that delicious secret to yourself and enjoy it!!

I wouldn't think it's anything to do with him yet..

None of his business unless there is more to your mom/son relationship

I wouldn’t. It will make things weird for your son

Good for you but dont let him

Keep it secret

No, while he should expect you to be a sexual person, he doesn't need the details.

Good for u.. he can hang out with ur son.. n u can hangout with his mom

Does he know you are gay?