What should you do or say to your girlfriend if you finish early in the bedroom?

You don't have to say anything. If she says something just say she is so hot you can't control yourself.

say u have to get up early for work the next day

Say... I guess that you couldn't help it cuz she's so hot or something.

Do...  get TF back to work.  Go down, use a vibe, whatever you have to do to make sure she cvms so hard she can't walk right the next day.

i say oops and give her oral, then go for round two

you dont finish early, you wait for

the second and third round to fully

satisfy her

Don't say a dammed thing.  Stay in the game until she's satisfied.