The choice is surely mine

I knew you back then as A. Been friends with you for years. So many memories, good times and bad. You were good to me.

Now you have acquired B, and together, you have acquired C. So now you're no longer A but ABC. It's a fused thing, can't be separated. You can never, ever be A again. I accept that. It's still all good. There is no problem.

Except. You expect me to be friends with ABC. But you don't seem to realise that it was your choice to acquire B and C, not mine. So you don't realise that the choice is now mine whether to be friends with ABC or not.

You see, to me you will always be A. It is A that I chose to be friends with. You can try, but you can't force me to now be friends with ABC. 

You made your choice(s), now let me make mine.