soo im in love with someone

Ok so the guy i had my first kiss with ive fet so comfortable around and happy and calm and ive never felt like this around anyone, but my first kiss was in 6th grade we are now 17 but even tho we broke up in 7th grade i still feel safe and happy with him he has a gf but i think im in love with him and i cant be with him is this normal. Is being deeply in love with your first kiss normal? Ik i cant be with him but i cry every time i see a pic of him and his gf bc ik he doesn't love me back. Does this happen to anyone else.