Dating

How to break down emotional walls in a relationship?

My boyfriend is great, he's funny, kind, sweet, and respectful. I'm so thankful for him and glad he is in my life, but I have noticed that he is falling for me much faster than I am falling for him. He just recently said "i love you" and while it made me over the moon happy, I could not say the same back to him. I have a lot of walls put up and have had them there for so long, I don't know how to let that down. I am an extremely emotional person so my way of not being weepy all the time is to turn off my emotions and be cold hearted and hotheaded which I have been controlling very well in my life and relationships lately. I'm scared to fall in love, I'm scared to put my trust in someone's hands and I don't know how to change that. I feel so bad that internally I judge the petty things I don't like about my boyfriend so I can find a way to give myself a reason to push him away. He's so good to me, and don't get me wrong, I am good to him too but I don't want to internally be this way and I want to be able to say "i love you too". I can see myself loving him, but my fear is in the way.
How to break down emotional walls in a relationship?
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