Is my relationship with my boyfriend wrong?

Throwaway account, coming to reddit cause I don't feel like I have anyone else to talk to about this. Also sorry if this is the wrong sub.

I (19F) started dating this guy(16M) 8 ish months ago. At first I didn't realize he was hitting on me and it took me 6 months to notice my feelings and some of his behavior wasn't platonic. I liked the guy back so I admit that to him. We didn't immediately rush into a relationship as we both had never had dated before. After a month or two is when I first heard him refer to me as his girlfriend and that was when to me it was official. I love being with him. He is so cute, sweet and like my reminder that not all straight guys are shitty. Some are really nice.

However, around when we first started dating, I would mention his age (4 months shy of 3 years apart) it would come up once or twice that the age gap is a little awkward. I'd justify that once he turns 18 it'll be fine but now I'm wondering if that's okay? Like my mom has brought this up a lot more now that we plan on meeting in person. Is his mom gonna think I'm a creep? or I guess since you two aren't having sex it'll be fine. Which were not and not planning to but now I'm just overthinking this and worrying I'm doing some to hurt or take advantage of him. I'm not trying to but what if I am and just don't realize. Context, we met online and live in different states. We planned on meeting up in the couple months when he's 17 and I'm still 19 because that works best for us and he would be out of school.

Should I wait until he's 18? I mean that's only a year and maybe it would be best to stay online for a little longer. I know I've justified it and he doesn't think anything's wrong but people in these situations don't usually know that their partner is being creepy until other people point it out. (I may be wrong on that) I want to trust that everything will be fine but I feel like as the older one and legal adult, I should be aware if something is legal or wrong and not do that. I really care about him and I don't want to hurt him.

I need advice, I am a creep? Should I leave him? Am I crazy?