Sims Freeplay "Ask to Move In" option not there for best friends

The "Ask to Move In" option does not appear for my "best friend" Sims.

I am in the house where I'd like them to live, and I have the homeowner Sim selected.

When I tap on the other Sim, I see the following options: 

Chest Bump

Have Birthday

Be Rude

Be Funny

Complain

Be Romantic

Be Nice

"Ask to Move In" is not offered. 

I tried having them fight until they went back to being Good Friends -- the option was not there either. Brought them back up to Best Friends, no change. 

Is this a glitch? I have played before and have always had the option for Best Friends to live together. i would be grateful for any information or advice. 

Thank you.