1st Option: Are you on the lease? If not - you can use that to your advantage by telling him if he doesn't respect your boundaries and stop dropping by when he feels like it, that you'll find your own place and he can deal with having two rent payments.
2nd Option: If you are both on the lease, and you really like the place, can afford it on your own and want to stay there, then go talk to your landlord, tell him your H has moved out into his own place and you want to renew the lease now in your name only.
3rd Option: February will be here before you know it so hang in there until then and start looking for your own place to move into once the lease is up.
