Giving off false signs?!

So I’ve been talking to a co worker for quite a while now. We got really comfortable with each other really quick to the point that we ended up fooling around once. Work isn’t strict about relationships within employees so nothing to worry about there haha. But it’s been constant texting back and forth. Late nights! We talk from late afternoon to maybe 3 in the morning. This has never happened before. We’ve talked to each other about everything. Relationships and whatnot. He’s helped me through a lot. Through family problems and anxiety. Depression. Anyways, I’ve noticed I’ve been texting him A LOT more than usual. It’s Every day and my issue is is that it might seem like I’m falling for him but I’m not. I’m afraid of commitment. We’ve made it clear as day to each other but I think my actions might make it seem that way. I know I have to feelings “LIKE THAT” for him but I’m afraid my actions might be demonstrating something else. Why do I feel the need to text him so constantly?! I have friends that I talk to but it seems like it’s just more fun talking to him. I need someone to help me sort out my mind on this! Can you ladies help?!