I don't know why I always forget it's Saturday ! Nevertheless nice article about low self esteem-am a victim,it has been my weak point though am breaking out of it gradually,I think it was an effect from my childhood programming .

My advice

Anonymous 1.From your story, it shows your boyfriend is violent and you are afraid to tell him "you are no longer interested because he may harm you" then involve an elderly person and ask him to pack out.

Benefit of involving someone

1.He may quickly accept packing out knowing someone is standing by you and may be show respect for the other person

2.He will be afraid to do you any harm when there is a witness and a supporter by your side

Anonymous 2 - what you think is love between you and the younger sister isn't really love, it's called chemistry of familiarity,and is as a result of the amount of closeness and attention you have given to her that triggers that affection. Avoid her for some days and give such amount of time and attention to your girlfriend ,the feelings will build back.

She talks so nice better than my girlfriend

This is where your art of betrayal start. Many guys also talks better than you, yet she preferred you to them. -And finally everyone has his or her flaws , dating the younger one doesn't guarantee your happiness , you might be happy with her now but once you are together ,you may begin to find things you will be surprise about.As a girl who is ready to betray her sister, there is more story you don't know about her yet.

Anonymous 3-i don't blame your parent , every parent who is wise will reason or talk the way they did because they appreciate kindness-once-shown . First, tell your new girl about the situation ,then also talk to your ex girlfriend letting her know you appreciated everything she did and you hate how it ended and the manner it ended .Then go further to tell her why you ended it and how it will be of harm to both of you to continue. If you are able to convince her to see reasons with you,then she alone can tell you mum to give blessings to your new found relationship