Well....this issue....
Let me put it this way....
Your family is your inner ring core. They are your first
circle.
I know your life is yours, you are one individual, but, directly
or indirectly, whatever you do, will have an impact on your family
members hearts and minds.
Let me give an example.
Let's say now your mum has a new boyfriend (as an example)
You dont like your mum's new boyfriend and you dont want him to
be your new father.
How would you feel ??
So can you imagine that scenario ?
And what if your mum just continue and proceed and marry the new
boyfriend, regardless of your feelings ? Will that impact you ?
Will that make you sad or not.
So as you see, it is not simply an issue of "parental control"
or how to persue choices as you wish.....the thing is....family is
a first circle unit and you are tightly bound to your family since
the day you are born into this world.
As such, I recommend that you spend more attention to the
feelings of your family members.
Anyways, you are still young, I doubt you will end up "marrying"
him since you are only 17 years old. Most likely you will break up
and date other guys in the future. So this is all just theory and
needless speculation.
Good luck,