Help!?

Me and my fiance have been together for 6 years. we live with his om an step dad while getting on our feet. we have 2kids,i do on an off jobs to get a little money,him on the other hand he wont get a job at all. he gets mad about everything me brushing my hair to me changing into nice pants. he says he wants us to get our own place but he dont look for jobs. i love him with all my heart. but he's always telling me he has something up his sleeve an he ant afraid to leave...him and his sister non stop talk crap about me..how would you handle this situation. also his mom always expects me to get the kids by myself an me only buy pull ups baith them an everything else.