I would just give your bf the money that he put into bently....you dont want to "share" bently. If you guys dont even want to live with eachother then you are not going to want to share your baby. It also sounds like bently is more your dog. You are the momma and he wants and loves you more. I would just talk to your bf and make sure he knows everything that it takes to take care of bently...and I am sure he will want the best for bently and will want you to take him.