Love Life Question

Ok so I have been in love wit someone for 4 years now and we never made it official but we act like we are.Their was a lot of bumpy roads in those years of other girls coming into his life n not lasting but I still stayed and now he claiming he loves me and always had but still won't make it official,reasons we were never together because he don't trust me honestly I don't know how to feel at this point if I should just conrinue trying because I love him and I hope he becomes mine and loves me the same way but in the back of my head what if we never get together and Ima be stuck in this cycle forever because I'm so infatuated😩😒💔