Question

For the sentence below, should I use "I" or "me"?

Using I:
Playing games has always been fun for Ashley and I, but...

Using me:
Playing games has always been fun for me and Ashley, but...

I feel like using "I" sounds correct, but on Word, it's highlighted as a grammatical error, so should I be using "me" instead?

Answer 1

The answer is me.
Trick: always say the sentence without the other name. So playing games has always been fun for ME.