I had a similar situation when we adopted our frenchie Diva. Gio loved her but she was not liking him. Baby gates are life savers!! We blocked off one of the downstairs rooms, this way when one of them was in one room, the other could see what was going on but not be next to each other. It took them about two weeks but after Diva started to love Gio, it's so funny now because they are inseparable! Just be sure to stop any fights and let them know that it's not okay to do that, and keep them separated with gates until they are used to each other, each day allow a little more time they are allowed to play with each other. Good luck and give it time, I was worried too at first with mine but they will be friends soon!