Why are you arguing so much? Are the subjects important? Do you both still want to marry each other? If you can’t get along is it worth forging the relationship further? Have you bothered to ask her if she wanted out or do you even know what you want in regards to her? Marriage is nice when people can appreciate and respect each other but if you argue more often than not.. is it going to turn toxic?

You should stop doubting your feelings IF you truly love her. But dont get married simply because it was something you felt you should do? Ask yourself this. Can you live without her? Can you imagine being happy without her in your life?

Do you love her or feel sorry for her?