he lied about his age for 2 years

the guy im currently in a relationship with has been lying about his age since the minute we met. i’ve known him for two years and i feel like i’ve never really connected with anyone else like i feel connected with him. we first dated two years ago and he broke my heart, but has since changed as a person and we are now back together again after two years. he just revealed to me that hes been one and a half years younger than me the entire time. while he was 13, i was 15. and we were dating. i’m 16 now, and up until a few hours ago i thought he was 16 too. he said he lied because he knew we’d never be together if he said his real age. my question is, is it it too weird to date him when i turn 17 whilst he’s still 15? should i break things off until we’re both over 18? I just have no idea what to do from here. I really love him. a lot. and he loves me too. what do i do? i need help. please.