so lately i have been having second thoughts about my fiance. he is 21, i'm 25 and i have a 5 yr old son. we don't often have time alone, but when we do all we do is argue, more often he is the one to start it. it's to the point where i don't even like being alone with him because all he does is yell at me. i've tried to explain this to him and talk to him about the issues and the arguing, and every time he just says he's sorry and he doesn't mean to yell. i'm so sick of hearing "I'm sorry". it's like it doesn't even mean anything, it's just a habit to apologize. he has also been getting grumpy with my son and doesn't seem to want to spend the time with him like he use to. there are days when my 5 yr old acts more mature than my fiance.
Any advice?