I just need help and someone to talk to

So I'm 16 and I love a 23 year old I know a large gap my parents know and are fine with it he's met my family and im in love with him and we're really close he's always been here with me I got

Diagnosed with ovarian cancer he was right beside me after surgery and before and I feel like it's right he's moving soon in about a year and a half I'll only have a couple months before I can move with him when I'm 18 any advice? 😭❤️