My family is upset about me and my gf

After a year of being apart, my girlfriend and I decided to give it another try. We池e both very happy about it. I知 so thankful for my girlfriend for really loving me even though I have so many flaws as a boyfriend. Sadly, my family is not so happy about this. They think our relationship has become too toxic and us meeting in a marriage tour event makes it worse. My sisters and even my mother wish for us to separate for good but I知 not gonna let that happen. How can I make my family believe in my relationship? How can I convince them that my girlfriend and I are good for each other? Anybody in this type of situation? Thanks.