I think that you do need to step back but you need to look at both of you. You posted recently about your explosion because you were hungry and your bf didn't turn up with some food for you when he said he would, but his father didn't allow him to leave the house very late (which I think was reasonable). You got really upset because he was eating which you felt very angry about.

Some times because we have high expectations of ourself we can develop very high expectations of others when we know they cannot abide by those expectations. Is it fair to expect him to live by your schedule when you know he won't turn up on time? Tell him you want to meet at 5 instead of 6pm. His parents are in the mix with a strong influence on his movements and curfews so that needs to be taken into consideration. Is it fair to try to force your own way when you know you won't always get it? That is throwing punches before you've even left your corner.

You are hurting both of you, and though he puts up with it now, how long will he? It isn't his fault that the repair guys couldn't get out until a certain time. I don't think he'd abuse them for that. I'm not having a go at you by the way, I'm just pointing things out that seem to be relevant.

Swallow the anger, and maybe try to discuss things rather than fight and you may find that both of you will be happier. I don't really see him abusing or being abusive to you in fact he seems to be the one who is making promises to change this that and the other but can he? You know when we try to bend others to our will it rarely turns out well, unless the bending is really needed.

I really wish you both all the very best, and peace both inner and outer