It depends on the content of the visual novel. If it has only positive and healthy relationship - centered themes without any inappropriate elements like excessive violence or mature content, then it could be suitable for a wide range of ages.
Trust and respect are the keys here. If you're thinking about a situation where your girlfriend, best friend and you have some kind of special interaction, it has to be based on mutual understanding. For instance, if it's just about having a friendly get - together, that's great. But if there are any inappropriate undertones, it can be very harmful. You need to make sure that your girlfriend feels safe and respected, and your best friend also behaves appropriately.
Well, usually it might have engaging storylines centered around the relationship with the girlfriend. There could be various scenarios that test the trust in the relationship. Maybe it has well - drawn characters and beautiful backgrounds to enhance the overall experience.
Another thing is to look back at your past experiences together. Sometimes, our current distrust might be influenced by some past events that we misinterpreted. Analyze those events and see if there are different perspectives. For example, if you think she once betrayed you, but it might be a miscommunication at that time.
It won't be easy. She needs to be completely honest with you about everything that happened. And she has to show through her actions that she is committed to you and the relationship. For example, she should be more open about her whereabouts and who she is with.
My answer may not meet your requirements. However, if you need to express your apology to your ex-girlfriend, here are some sentences that might be applicable:
My heart has always been connected to you. I'm sorry that my decision hurt you.
I'm deeply sorry that my actions caused all this.
I really regret not cherishing you.
I want you to know that I really want you to come back to me
I'm sorry that my behavior has disappointed you.
I promise I won't make the same mistake again.
I hope you can forgive me. I will try my best to make up for my mistakes.
I really hope you can forgive me. I'll do anything for you to make it up to you.
I really will cherish you forever and try my best to make our relationship better.
I hope you can understand that my heart is full of apology and love for you.
Tell her how sorry you are right away. Listen to her feelings without interrupting. Maybe offer to do all her chores for a week or something like that. Also, show her that you trust her by giving her more access to your own private things. It'll take time to make it up, but being sincere is key.