Idkkkkk I’ve never dated someone

It’s super ironic, these last few months I’ve been saying that I won’t get in a relationship and won’t date but then a few weeks ago I reconnected with a guy friend and we hungout. He held my bag for me, paid for my food and basically treated me very well. I’m pretty self aware and right now I’m not sure if liking someone would just be because I like the way they treat me or something else. I’d hate to lead him on if this gets any further, he’s a super sweet guy I don’t want to break his heart. I do have a few tiny concerns though, I’m pretty sure he just recently came out of a 3 year long term relationship a month ago and I don’t know how to feel about that. He also started being more hygienic after I told and taught him. Because he has a little bit of BO and I typically would be very against it. But in my opinion, im not sure if it’s okay for someone to change themselves specifically for me because most likely won’t keep it up if they’re not doing it for themselves. As well as the fact that im in my last year of high school and honestly idk what to do. Basically to sum it up.. how do I know I like him? How do I know if I should date him? What should I do? To date is it to make sacrifices for eachother??