Knowing Dan and the writers, I was like, Oh, yeah.

That makes sense, chuckles Sullivan.

I was excited for the two of them.

thisisus

Credit: Ron Batzdorff/NBC (2)

I think theyll make good parents.

For their situation, it could be any number of reasons, says Sullivan.

The state of their relationship, theyre not married yet, pregnancy is a delicate thing.

Kate has a history of not wanting to get her hopes up for things.

What can he hint about Tobys reactionwhen he finally gets the news in Tuesdays episode?

I think Tobys a pretty positive person, deadpans Sullivan.

Clearly, this turbo-injects a new dynamic into their relationship, which they agreed to take slowly.

(In fact, they just moved in together.)

This Is Usairs Tuesdays at 9 p.m. on NBC.

For moreThis Is Uscoverage, follow us onFlipboard.