Any asexuals out there?

I’m asexual and DO NOT want kids. The closest thing I would ever want to a kid is a dog. But, there’s a guy I’ve been flirting with that likes me too but I can tell he loves kids. We’re both way too young to even consider kids yet but it makes me anxious that he and no other guys will love me because I don’t want kids. Sex scares me but I feel like I can learn to overcome my fear if I really like my partner, but what if no one wants to be with me because of me not wanting kids and my feelings towards sex? Are there any asexuals out there who made it work? I just need something to ease my mind