Venting help

I really don't understand my boyfriend is being a a$$ am a single parent of two girls then he has his son that I care for I stay home to care for them and I always get threatened if I dislike something and voice it to get out of my home that we live in with him. He just got over a drug problem and drinks a lot but he is somewhat responsible but I at times have a problem leaving the kids home with him and know I'm get told I have to pay for stuff with no job😩