Bonding with Sparkle

I am quite well-bonded with Sparkle since my dad's hospitalization. He has been sleeping with me every other night. On nights when he doesn't, I do miss having a 3rd party on my bed. Feels empty without him beside me. Unfortunately, he is very hard to tame. Each time we leave the house, we will NOT be surprise finding him pee-d around a few "standard" areas in my house. It's almost as if he is acting up, showing us that he is angry that we left him and Spanner at home. :(