<human>: Can you condense the text into three sentences or less?

I've been with my boyfriend for 7 months now (23F dating a 28M). This is the first time I've been in a relationship where I wasn't the one more in control, feelings-wise. In the beginning of the relationship, I decided to just let go and fall in love, and if I got my heart broken, so be it. But now, the more I love him, the more I understand what I have to lose, and it's tough to stay emotionally open. All I want is to be with him, but I'm still afraid one day he's going to wake up and just realize that he's bored of me or that I don't contribute anything to our relationship.

I know at least some of this is just negative self-talk; he loves me beyond any shadow of a doubt and says I am his favorite person in the world. He tells me things he's never told anyone else. I've met his family, we've talked about getting married someday, and we're adopting a cat in a few month. So why can't I stop wanting to close up or run away, emotionally speaking?  I've talked to him about my concerns and he feels it, too, to an extent (he's also worried about getting hurt), and we've both had bad relationships in the past that caused trust issues.

I would be absolutely devastated to lose him, and I don't want to destroy the amazing relationship we have by worrying over it constantly. I'm sorry if this is all over the place, I just really needed to get it out and any advice offered would be appreciated.
<bot>: My boyfriend loves me a lot, but I love him even more, and I can't stop being scared that I'm going to get hurt. How do I get past this and continue to be an emotionally open and supportive partner?