Hey,I always feel very jealous when my boyfriend goes out with his friends.I trust him but can't watch him happy without me or happier than he is with me?

In my personal experience, the times when I have been jealous about other people's life events separate from me, it simply pointed that I was lacking something in my own life. It is a shame that you feel compelled to compare how happy he is with them or without you, because usually happiness is just different with everyone you spend time with. A lot of the time, it speaks on insecurity, which will only hold you back further, so it is good to start with yourself and examine what it is that constantly urges you to compare and fixate.