About Part 2

So I really love Tlou part 1. I have played it countless times in my teenage years and the story about ellie and joel is one of my very few happy memories of that time. Recently I got my friend to play part 1 for the first time and he is really enjoying it. We are almost done and of course he wants to play part 2 next. I have never played it myself. When it came out back then I was just busy with life and later I found out that Joel dies very early. I have also heard, that ellie and joel dont really have a good relationsship with each other anymore. Just thinking of that breaks my heart but I dont wanna prevent my friend from playing part 2. So without giving too many spoilers can someone tell me, if part 2 will destroy those joyful memories I have left from part 1?