Among all the soft drinks I only like mountain dew
I prefer Coke when it comes to soft drinks. I do not mind Mountain Dew. I try to steer clear of all soft drinks usually because of the high sugar content. Are you worried aboutt the sugar content?
yes too. But I cannot stop myself
Right. Well, do you only like the softdrink as a customer? Or would you consider yourself a fan of the brand as well?
The brand is very important to also the taste
What can you tell me about me the brand that is important? 
Sometimes you loyal to the brand I can't explain why
You cannot argue that. Mountain Dew has a large marketing team with a higher purpose to promote the soft drink.
Does it also belong to the coke family?
I don't think so. I think Mountain Dew belongs to the Pepsi Family. I think Sprite is associated with Coke.