Answer the question about text:

My ex and I have been together for 4 yrs until i recently found out that he was cheating on me . We have an 18 month old daughter and i have been a stay at home mom off and on since she was born , i have been the sole caregiver while he works and pays the bills . since he has cheated he has become mean and rude but then the next moment acts all nice . , He tells people he is here for our child yet he comes home at 4 am sleeps till 2 pm which is when she is napping and sometimes only sees her for minutes a day .

What may happen if he leaves them ?
They will be better off .