"Oh, well, I guess I have to go."
"I guess I'll have to get to work on that tonight," he said, deflated." I was going to ask if you wanted to go out. "
If my go-between can't get permission for me to marry her, I guess I'll have to take the bull by the horns and go to see her father myself.
I guess I'd have to go with the midget.
Hmm, I guess I don't have time to go shopping, huh?