Mama June -- Kicks Sugar Bear Out ... Claims He's a No Good Cheater

Mama June has kicked Sugar Bear to the curb again ... and it's the same old story -- she thinks he's just too horny.

June tells TMZ she told him to leave after finding out he's continued engaging in online romances. She says Sugar Bear insists it's harmless ... he just does it for the thrill, but she's not buyin' it.

Sugar Bear and June have been trying to rekindle their relationship after she promised to stop seeing convicted child molester, Mark McDaniel.

As for Sugar Bear ... we're told he's sick of June's accusations, and he's done with her.

And June's not the only one that recently made a big home purchase ... we're told SB quietly rented a 4-bed 2-bath double wide with his brother ... so he can stay close to Honey Boo Boo.