Update from the past week:

On Monday S11 told my wife that he didn't like the way he's treated when he's there. She in turn sent me a TM telling me to keep my nose out of her business and to stop asking the kids questions. Just to leave her alone. I replied that I was sorry she felt that way but I was going to ask if it had anything to do with our kids. She said "Nice excuse to keep tabs on me and I know that's what it is." I dropped it and didn't reply because she was trying to bait me.

Thursday, S11 had a band concert. We had to be there early so my D's and I got front row seats. We were saving a seat for my wife when D's said that they thought "friend" was coming too. So I TMed wife to get a feel for the situation.
Me: Are you planning on sitting with me and the girls?
W: Well S11 invited "friend" to come Is that going to be an issue? (S11 did tell me he asked "friend" 2 weeks ago)
Me: Why would it be an issue?
W: Don't know just asking
Me: You said you were friends. If you want to we're saving seats.
W: OK be there in a minute.

OK. So we were saving seats by leaving an empty between me and D8 and between D8 and D6. I was just going to have them slide down when they got there. When they showed up, D8 says Mommy your seat's right here (the one right next to me). Now I know my wife if she didn't want to sit next to me she would have said no and sat in between the girls but she did indeed sit next to me. I have to say I was quite the positive and charming young man. She did start off sitting sorta turned away from me but she would tap me on the shoulder and lean over and say things to me. We chit chatted throughout the concert. She was in band in high school so I asked her all kinds of questions. We joked and laughed. It was a lot of fun.

I kept an eye on the interaction or should I say lack of interaction between wife and "friend". They hardly said 2 words to each other the whole time and didn't really look at each other either. We were parked on different sides of the school so I watched when the left, they didn't walk out together.

Friday, wife asked if she could come to the house to get S11's bike. I pulled in the driveway just as her and "friend" were leaving. Normally she would just have left with no acknowledgement but she waved to me as I went by. Then she backed into the driveway to tell me something that was unimportant but felt she just had to tell me.

Saturday, wife TM to say she is bringing S11 to the house to get a memory card for his video games. Normally she would just send him in and wait in the car but she came in too to get some of the kids' videos. I was cleaning the kitchen and singing along to some music when they came by.

I think I'm getting better at this.