Why would your spouse suddenly be uninterested in bed when she was interested during the foreplay?

You've been together for 9 years and don't communicate enough to discuss this with her? Or know the answer already?

There's a book called The Power of Two and can be found on amazon or most book stores and it helps teach you how to communicate. It's a work book the two of you do together. I have no affiliation with the book but have used it myself and had friends who also used it to their benefit.

Marriage counseling isn't just for those with a bad marriage. It's also for those who want to make even a better or stronger marriage.

it sounds like something needs to be discussed and repaired in the sex department. Hearing that can be hard, but fixing it can be exciting and cause a lot more sex. Worth it in the long run.

Maybe she was suddenly thinking of something that upset her. Or, maybe you weren't quite doing something the way she wanted. Could be a number of reasons, but those two seem the most logical.

Sounds like she gets more out of four play than what she does the act of intercourse. It's not uncommon. Most women love four play.

Probably wanted to get control of the remote?

It is hard to understand why you can't ask her about it.

Ask her, not us.