She has shame likely because of how she was raised. But what you did with purposely watching her doing it and asking her how her orgasm was is a total creep power play. She has issues likely linked to childhood trauma and you are obsessed with getting her to admitting she is masturbating. You are more obsessed with getting her to admit it then understanding why she won’t and helping her heal. Your behaviour is a massive red flag.

Yes break up with him. You have known him for only 10 months and you are now finding out who he is. I would be making arrangements to move out immediately. Staying will come with finding out more disturbing and disgusting things about him.

Tell her the truth about her parents. You would be foolish to get married and have kids with someone this attached and controlled by parents who see her as a baby incubator who doesn’t have the right to her body autonomy.

Major red flags that she is that attached to her disrespectful parents who see her as a baby incubator. She needs to hear the truth and start seeing them for the selfish creeps that they are.

These abusers should no longer be allowed in your home not should they have a key to your home as they will sabotage any birthcontrol. These lunatics are not to be trusted.

Tell her exactly what her unhinged and abusive parents told you. Those control freaks are demanding you sabotage birth control methods to give them grandchildren. These are the kind of people that should never be grandparents as they are unhinged, selfish, manipulative, deceptive lunatics that would pull all kinds of abuse outrageous stunts. Do not keep this secret. Never stay in their home. Tell your gf every detail of that conversation. She needs to know how far her awful parents are willing to go to destroy her life, sabotage her future, violate her boundaries and body autonomy and disregard her feelings. These abusers see their daughter as a baby incubator, not as a person who gets to make her own decisions about her life.