Well, if your girl lays there like a limp dishrag and finally says 'well, are you finished yet?' I'd say you've got a problem.
Yea, if she starts snoring while you're pounding away in her, there's a slight possibility that you're not the world's greatest.
Don't worry about it ..... if she/he ain't even got the confidence to tell yer that yer crap...then you're the best she/he is gonna get anyway
If she's laying on her back, you're thrusting into her from the side, amd she's reading the Reader's Digest, you MIGHT have a problem.
your partner flinches in pain, says ouch all the time, tells you to slow down/stop/change something and you can't/won't