Jealousy issue with my hubsband's family

Hello, my marriage will be held very soon. Me n my partner are very close to each other n we are also best friends since 8 years. But now a days m facing jealousy problem with his family members. I easily get jealous with his sisters. If he take some suggestions from them or maybe he shows his love for them infront of me, i start feeling jealous of it. My mind want his full attention on me n his full love for me. I know this is not good becoz if this will be happened with me that I have to choose anyone in between my family n husband, i will be confused becoz both of them are important. That's why i dont want to give my hubby any kind of situation like this to choose any one... I want a solution to be happy and stop getting jealous with him and his family relationship. When i see that his focus n love is shift to his family i feel insecure and bad. It feels that i am not valuable for him infront of his family. Please help me to overcome from this feeling.