So DH and I agreed to go by the child's scheduled visitation. 

Last night Ss14 called DH to see if he could go to an all weekend thing and he  told ss that he could only if mom switches weekends. She said no. I asked DH several times during the evening f he would change his mind under specific circumstances. He said he wouldn't that SS was going to be with us over the weekend.

Today he comes home and tells me he reached a compromise with BM and he took Monday off to spend with his son who will be attending his weekend thing after all.