Relationships that are having problems usually include couples that fight over the smallest, most minor topic.  Relationships that are doing well still argue, but the arguments never end with a complete and total meltdown of both people.  As a girlfriend who is not cheating, demonstrate to your boyfriend that, while you guys fight, it's never the end of the world.  If you were cheating, chances are your fights would be significantly more severe. Cheating on someone takes a lot of energy and usually results in feelings of guilt and anxiety.  If you were cheating on your boyfriend, chances are you'd be showing signs of depression, anxiety, and guilt.  If you're a calm person who doesn't appear to be at all worried about your relationship, how can your boyfriend think you're cheating on him?  Ask him if you've ever been upset for no reason when he's asked you something (e.g. like where you've been).  If you've always given a reasonable explanation about your whereabouts, why is he worried? Ask him if you have weird and unexplained mood changes that have nothing to do with biology or obvious external events (e.g. problems with family or at work).  If you've never exploded at him for reasons he can't explain, why would he think you're harbouring guilt about cheating? Someone who was cheating on their boyfriend wouldn't be trying to advance their current relationship.  If you and your boyfriend talk about your future often, or talk about things like how you see yourselves in 20 years, you're very unlikely to be cheating on him.  These aren't the types of conversations someone who is cheating would want to have.  If you were cheating, these are the conversations you'd likely try to avoid or gloss over. One of the last things a cheating girlfriend would do is invite the boyfriend she's cheating on to family events and show him off.  Make sure to include your boyfriend in family events.  Encourage your parents or siblings to communicate directly with him, if they want.  Brag about his accomplishments to your family...

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Write a summary of the previous text in Vietnamese:
Tranh cãi hợp lý. Giữ bình tĩnh. Nhìn nhận mối quan hệ một cách nghiêm túc. Dẫn bạn trai đến sự kiện gia đình. Chia sẻ bí mật của bản thân với người bạn yêu. Tránh so sánh bạn trai của bạn với người đàn ông khác. Khen ngợi người bạn yêu mỗi ngày. Chứng tỏ cho người bạn yêu biết anh ấy chính là một trong các ưu tiên hàng đầu của bạn. Nhớ lại sự kiện cũ.