So.. My fiancé has a 5 yrs old daughter, and I have a 4 yard old son. We been living together for about 5 months.. It's been  hell😫☹️ if it's not my son, it's his daughter but we always disappointed in something... We don't fight or discuss over kids problems because we understand they are kids and they may not like each other!! Since my son has been always the only kid in my family and the same thing with his daughter 😣 I really start getting frustrated for how she acts.. It's stupid but I can notice she knows what's she's doing by looking at me and laughing😒 when my fiancé does not see her😤 she also provokes my son to fight her.. Like if my son it's playing with his cars, she immediately will go and take his toys away and make him cry... And then tell her dad she wants to play with my sons toys, I know they have to share... But she makes it too difficult since she does that just to make him cry and make me upset since she knows I'm not gonna tell her anything😣😣 I have thought to be done with this💔 and keep moving just me and my son...😔 but I really love my fiancé.. We are getting married in 3 months⚜ another thing that I'm really upset with and that I definitely get mad at,, every time I'm spending time with my fiancé, when I kiss him, hug him, talk to him, or we go to our room to talk or just have some time together.. She starts crying, yelling and calling him.. Of course he goes to her and she will immediately look at me and laugh 😡😡😡 I really need an advice!!!!!👋🏼