I'm in love with 21 year old but I'm 13. is this really bad?

Ok so I am 13 years old 14 next month. And this summer I fell in love with a 21 year old guy(I'm a girl). There's no sex involved. And I know this sounds super stupid and some might think I have no clue what I am talking about, but I have thought long and hard about this and this feeling isn't going anywhere. Maybe its too early to say I love him but after asking people and researching everything I feel fits the description. He feels the same way. Only there's two problems. One I'm a minor, so obviously anything sexual will have to wait until I am 18 of course. And the second problem is, well it will not be a problem once I am 18, but he lives in England, I'm in America. Honestly, is it really wrong to talk to someone over the internet? I realize there is a big age difference but I am extremely mature for my age. It started out as a friendship and developed into this. He is my best friend and I care for him more than anyone else. The subject of sexual things has come up but its just joking and now its just talking about everyday stuff. However I kept this all from my parents. My mom found out yesterday. I can't lose him. I honestly need to know from a person who can put themselves in my shoes and give me a good opinion. He is a respectful guy, very caring, sweet, listens to my problems, and helps me cope with bad stuff going on in my life. He is my best friend. This has been going on for about a month and a half. Do I need to give this up?