Hi ~ I have to agree with Bloom ~ You have to decide one way or another how much you're going to take. If it were me, I sure wouldn't want to play second fiddle to a niece!!!

Cause if you do THAT you're ALWAYS going to be second to someone. You're NEVER going to be first in his life. Someone is always going to come before you.
No thanks. I wouldn't want a life like that because I would be eternally MAD. Even if I had to move back home, I'd get out of that relationship. He's just not "the one." You're just in for a lifetime of hurt and disappointment.
I wish you the very best. God bless and take care. Hugs, Lee