Maybe next b-day, have kid pick out a couple presents that they will open over at your place when they come over to you. And if it is your turn w/ them, offer that to your W. Set a precedent that both parents are included even if the two of you aren't comfortable w/ each other.
The DB force is growing strong with you.
Me: 50 W:43 S6, S3 M: 12 yrs. T: 17 M is bad & Not happy Bomb Mar '14 S 5 Feb '15 D Bomb 13 Apr '15 (but "no hurry") DB Coach May '15 Wants proceed on D Aug '15 Starting 1-on-1 negotiations Sept '15