No, I don't think he wants to be single for his holiday. From what you say, it sounds to me like he needs exactly what he asked for: Time out. You may not feel any internal stress when doing things similar to what he is doing, but perhaps he does. I know that "going on holiday" for me is very stressful. Yes, there is an element of "fun" to it, but there is all the prep that has to be done and things to consider, especially if he is seeing his kids as well. He may just need you to be understanding that he cares but needs you to take a backseat right now. You may be confusing yourself by trying to apply common standards to a man who marches to the beat of a different drummer. You may want to step back and try being less emotional in your responses to his behavior. Wait until he comes back, and then try to have an unemotional, matter-of-fact discussion with him to express your feelings. He obviously doesn't want to end the relationship, so he will no doubt call you upon his return, if not sooner.