Should I let him help me with my kids?

It's this guy that has been liking me ever since high school. We recently just started back talking and he's been wanting to take care of me and my kids. I am a struggling single mother so it's hard for me financially but I find it hard to accept his help. I just don't want him to feel like I'm using him. One time I told him I was going to the store and he wanted to pay for everything so he cash apped me. Now he's trying to do more. Should I let him? I do like him but are we moving too fast?