When to say "I love you"

Jessica
So me and my SO have been together for about 6 weeks now. Not a long time I know, but I already know I love him. I had said it to him a couple times when I was drunk and we both wrote them off. Then like two weeks ago I realized that I actually do. I haven't told him yet because I'm scared he won't say it back. Should I wait until he says it??