My Sons Best Friend Is My Ex-husbands Son from Another Marriage

You may feel awkward about the situation, and whose to say I wouldn't feel awkward in the same situation. The thing is though that the boys just know they are friends. I think too often adults try to give children the attitudes that we have rather than letting the children form their own opinions. I mean adults think too much about how things are awkward, or strange and don't allow children to show them that we can all be friends. I grew up with my dad and step-mom. My bio mom was very good friends with my step-mom. I never thought that was weird until I was grown and people gave me weird looks when I talked about my moms. I am thankful that I had both of them there throughout my life. They are still pretty good friends to this day so I know it wasn't "just for the kids." I just think that if we all chose our friends like kids do, and didn't worry about how this is awkward, this world would be a much better place.

Anyway, that's just my two cents. Have a great day.

Just treat it like any other friend situation. Tell them your expectations and requests for your son just as you would any other house that he stays at.
If you think he is a good dad and you agree with his rules than all should be fine.
If you are feeling that awkward about it than just talk it out with your ex. They may feel as awkward as you and maybe getting it out in the open will clear the air and everyone can be together happily when needed.

I am sorry I am confused. You have 3 sons, 2 by first hubby and 1 by second hubby. They are all biologically yours. Why would a mom care that two of her sons are best friends? sounds like they are making life-long friends and as brothers no less. Unless the kid by ex-hubby is a step-child and not biologically yours.
As I see it you have 3 sons and two want to spend more time together. But two of them live with your ex-hub and 1 with current hub. they are all your sons, you say your ex-hubby's son, like that son is not yours. if they are all yours i can't see the problem. wait until it is your weekend for visitation and go for it. they are all half-brothers anyway. and your other two sons would probably like to see you more anyway.
I am not sure if i have read your request correctly. it could be you ex-hub and new wife's son and your son with your current hubby, but that ex-hub son's are not yours?
But you called them your son's. but you write like they are not yours. because if they are yours i don't see the problem. But then you say THEIR son? which is it your 2 sons, or their son?
if everyone is ok with the situation then let it go. what kind of awkward are we talking about. you seeing your ex more often? current hubby jealous? crazy wife? if you are the only one that is awkward then there is nothing to do but be thankful that everyone gets along so well the you kids are all friends. most people don't even have that.
good luck,
L.

I totally agree with Janet W. Great advice Janet...well said.