I abandon my husband and my kids after my husband slap me

This my story, I have be married for 11 years, with five kids, 2 boys and 3 girls, I got married to my husband because I got pregnant for in my 20years of age,so he was asks to marry me, and he agreed, since then we have be living together, sometimes we fights and still live together, until last year december 2021, I mistaking insult him and he slap me, out of anger I packet some of my clothes and left him and my kids, since I left, my husband has being calling to come, but I told him to come to my parents house and take me back home or i won’t come back but my husband refuse, it was just two months I left my house, now people are calling me and telling me that my husband has brought in another woman who is now taking care of him and my children, I thought my husband loved me so much that no matter what we do he will never go for another woman, I have really made a very big mistake, I’m a fool by believing in that word he once told me the night we both had a good time together as husband and wife, he said no matter what I do to him he will never stop loving me and will never marry another woman, he will be patient for me to change one day,but he has not actually paid the lady’s Bride price yet, but he is planning of doing it so soon and this lady is now living in my house taking care of my children and sleeping in the same room with my house, I’m sure they are having sex already, I don’t really know what to do, I’m still in my parents house, should I go back now since he has refused to come to my parents house to take me back home, I know my husband wasn’t the one that sent me away I left on my home, please advise me , because I don’t want my husband to marry another woman