In a now-expiredInstagramstory, she posted multiple screenshots featuring her last conversations with her friend.

In his final message to Hendrickson, Miller wrote, “I very much appreciate the help.

And, more importantly, you make a great mom.

Elizabeth Hendrickson and Billy Miller posing

You are where you should be and it makes me happy to see.

For what that’s worth.”

I love it so much.

I feel complete."

Alluding to beingreal-life partners, she wrote, “We were co stars.

We were more than friends.

We were complicated at times.

What never changed was my love for you.

I’ll always love you Billy.

(BJ).”

Miller’s birthday was three days after his unexpected death, and Hendrickson wrotea lengthy postremembering him.

She said, “This hole in my heart will never be filled.

Goodnight, sweet Billy.”