[My guy Charles]

I am keeping my daughters ( female) puppy while she is in Africa for the next six months. Charlie is not happy and I feel he is getting even with me! He was housebroken and now he just goes when and wherever he wants! I bought a belly band and he just wets that constantly!!??? He is fixed so I didn't think he would be marking his territory, but that's what he seems to be doing. I feel sad for him bc I think he is jealous. I am trying my best to dote on him but I also have to dote on my daughters dog bc she doesnt understand why she lives with me now and where my daughter went. I wasnt expecting this to be so difficult?! I thought they would enjoy each other and play but they are not ...This could make for a long 6 months!!?? Any suggestions..?
I am hoping the apt helps him... And me!!
Thanks