I've been split from my ex for 3 years & the first two christmases we spent as a family opening presents together as it's what's best for our kids. They have a lovely time (5 & 8). We coparent well. However in Feb this year he got a new gf. Kids met her in the summer. Everything seems fine but he's just told me that this Christmas he wants to do things separately. He said I can them Christmas Day and he will have them Boxing Day as his wants the kids to spend some time with his new gf at Christmas. Im just a bit shocked as I know this wouldn't be coming from him.
How do I approach this? My kids will be so upset.