That's literally rape. If you consent to a sex act, that doesn't mean you consent to any sex act. If you "switch holes", or "lose the condom" or simply don't put one on at all, without consent, that's a non-consensual sex act and thus rape.
If you agreed before to kiss for 10 minutes but stop after 5 it doesn't make it rape either.
If the person asks you to stop and you refuse that's rape.
If she finishes first and asks you to stop and you continue that is rape.
But you don't need to have a detailed conversation agreeing to everything beforehand. If you try something and the other person doesn't stop the action it is not rape.
You could both agree not to do something beforehand and end up doing that act and it wouldn't make it rape unless one party refused that action during the attempt.
If we agree to have sex while she has a blindfold on but only if I wear a clown mask. If I take off the mask before sex and she watches the tape later she cannot claim rape.
Or do you think that's rape as well?
2. Yes, your example describes non-consensual sex, i.e. rape.
If someone has aids doesn't tell the partner and they die they could be charged with murder or assault. But never rape.
If you think pointn 2 is rape then a husband promising to take out the trash if sex is performed and him not doing later makes it rape. Fraud perhaps.. you are missing the violence that rape puts the victim through.