I'm 27F and he's 20M, my guilt is consuming me

We met online and I didn't know his age because I assumed he was 30 from his photos.

We started connecting and growing a deeper connection online and then we met in person and sparks flew even more. After a few months later it hit me I never asked his age. I also knew he's moving back to Saudi permanently and I just wanted to explore this connection for the emotional depthness of it. He grew up in war and lost family members in his arms, he was forced to grow up really fast. The average 20M American I could not get along with. I know it's a cliché to say but due to his childhood circumstances he's had to grow up faster than most, for example, compared to all my male friends in my age group, he is far more mature than them they even agree

You see he works as a commercial pilot already so to me this is also a job for someone whos older. We are both muslim so we never go to bars. I just never thought to ask. And I cannot emphasize his mental and physical age is of a 30 year old. All my friends thought he was older than us.

Long story short I felt guilty about the age gap because I am not the type of woman who dates someone younger below 25. The brain isn't fully developed until 25 and especially for a young man he's got a lot going on in his mind. Unfortunately I found out about his age too late because now I'm in love.

Sounds so stupid trust me I know.

He's literally moving back to Saudi permanently -- but says we can find a place to live in the world that isn't Saudi or America. He said he'll be ready to marry in 2 years, he's wanted a wife and kids for as long as he could remember.

But I believe my conscious brain is finally catching up to my subconscious because no matter how much love I feel for him -- the gap is too big regardless of his emotional maturity.

I do believe if I was 37 and he was 30 I'd be okay dating him -- but him being 20 and me being 27, even though both are the same age gaps, 20 itself is too young.

Am I overthinking this? Should I just say fuck it and keep falling in love and move to wherever with him and just do this damn relationship? Or am I delusional as heck?