How do i fall in love?????

My husband and I were both ''burned'' from our previous marriages. After 3 mths of my divorce I met my current husband. We got married, and now have a pretty princess. I also have 2 girls from previous marriage living with us. We all spend every moment together if he's not working. We never fight, just the occasional arguments.We are usually the happy couple. I love him to pieces but when he jokes around about me having my BIL as a b/f then it makes me mad... or when he is pissed off then I don't want anything to do with him. Yet, I am always the one to leave so that we don't make the scene worse in front of the children and usually the first to say sorry, but How do I fall in love with my spouse in that aspect?