How do I stop getting sad and accept that maybe he'll never marry me?

I am at the point in my life where I just want to settle down and have a family. I thought my boyfriend was on the same page. He even expressed wanting to marry me. Now... I don't know if he actually will. He mentioned that his parents have 20% say in if he actually marries me. On top of that, I have to some how impress his very image centered mom. I'm overweight so... even though I'm working on losing it, it might not be enough.

Things were great until his family pushed him to purely focus on studying for his med test and pretty much had to meet up in secret. Now, we are at the finish line and he's very focused on his test. I won't be able to see him for 3 more weeks (it's fine, I want him to do well and not burden him).

Anyway, I'm trying not to focus on the fact he backtracked from sounding certain on marrying me to now I have to impress his mom and go about the channels the "right way". Had he not have to get his dad's permission through his visa... we would have gotten married months ago. He was having me register through the courts and everything.

I don't know what happened and it does confuse me and makes me insecure. I wouldn't have taken his word so seriously had he not push me to get us, at least, legally married. Our plans were wedding later when life was settled down and not even a big one. Just family and both are a small amount. Nor expensive either.

How do I push these feelings of hurt and rejection down? I mean he didn't say he wouldn't marry me anymore... just now his mom suddenly needs to be met and impressed. Is it possible that it's his father, who has control over him legally, preventing him from marrying me? Or... is he taking a step back and realizing maybe I just suck?
How do I stop getting sad and accept that maybe he'll never marry me?
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