i feel so weird about this

so i work at this big retail store and there's this customer who comes in all the time. we've been talking for a while now and he kinda started treating me like his little girl. it's not just regular stuff, but more like when i'm upset or stressed out, he gives me advice and talks to me like i'm still figuring things out. i feel silly saying this, because yeah, i know im 18+, but it feels weirdly good having someone act that way for me sometimes. like last week, he told me i did a great job after something went wrong at work, and it made me feel better right away. but now i'm wondering if this is normal or if i should be more careful about my boundaries. what do you all think? am i being ridiculous?