I wouldn't say he doesn't love you he is just protective of his child. It probably isn't sexual but more curiosity. She isn't at the age to appreciate how inappropriate it is. I would schedule a few sessions with a counselor (private) to use role playing or dolls to show good touches and bad touches. Although you are separated now, this is a fairly easy problem to resolve. Then he can return when ground rules are established. Follow the suggestions to use a behavior modification system to maintain this work. This can work. She just needs boundaries. then work on boyfriend to assure him that this is all you have done.
If this is helpful press accept