How do I bring it up?

S • 💏💑😍
So I'm 100% sure I love my boyfriend but I haven't told him and I want to bring it up to him without just saying it. I want to make sure he feels the same first. I haven't ever told anyone other than family that I love them. Help! I will not just say I love you so don't say that. I keep trying to bring it up but I get nervous and back out