My boyfriend and I go to different schools..and it just keeps getting harder especially because of another boy?

I just turned 16 and I've been going out with this guy from a different school for a year and five months now...this month makes our one year and a half. He truly means a lot to me, he's my best friend and the boy I love. I know love is a very strong word and it probably sounds very anticipated at my age (he's also 16) but it just happened. We went to the same middle school and he liked me since the 7th grade, at that time I had a huge crush on this other guy that happens to go to the same high school I go to along with three other kids from my middle school, ironic I know. Later on I gave up on the other guy because I realized I was just one of the many girls he liked, and that's when Devon (the guy I'm currently dating) came and helped me get back up. Summer of 8th grade year he asked me out and we fell in love about 5 months later. Now I just feel like the distance is too hard to handle and I need him closer with me more than ever...I only see him about once or twice a week and it's quite hard. Especially now that people are telling me that Kevin (the guy I liked in 7th grade) has been waiting for me since 8th grade, he recently straight up told me he likes me and has for a while...some of the crush feelings are coming back. I really don’t know what to do, Devon's the type of guy who's really smart, funny, very respectful, mature, considerate, emotional, athletic and very patient/caring. Kevin's the type of guy who focuses more on sports and likes to have fun at this age like going to parties and dancing and just not as emotional, he’s the popular great personality and nice guy. I'm the kind of girl who focuses on school, is very innocent, I care for other and I guess I'm just known around for being nice yet fun but too innocent. The difference between Devon and Kevin is that Devon is more of the respectful guy; he's special in that way. He wouldn’t ever touch me inappropriately nor obligate me to do something, he thinks making out is already too ual, he thinks physical stuff is unnecessary but I enjoy it...while Kevin likes to enjoy the physical stuff but he knows how to control himself too, I guess he just goes further and leads on. I’m honestly confused at this point; I don’t know what to do. Devon knows I’m getting feelings back for Kevin…and the bond between us seems to be fading, we always seem to argue about small stuff or about breaking up because it’s so difficult for me. Can someone PLEASE help me!!!! I'm in a crucial moment and I need some advice...Thank You!