I like my guy and I am finding it difficult to leave him.

I’m a 20years girl completed shs last year dated this nice guy who is 22years….

We started dating since shs 3 we completed the same year tho
We had big dreams together which we wants to achieve them…
This guy was doing anything possible not to loose me
I was also very serious about our relationship which made me turn a lot of good and nice guys proposers down just because I was soo much into him. We had our first sex on my 19 yrs birthday since then I have never say no to his decisions.
I think I was doing everything to make him happy.
He used to surprise me with stuffs and I also do same….
He knew everything about my past relationship because I didn’t want to hide anything from him.
Since I told him about what my ex used to do to me this guy has been using it against me🥺 n has totally changed to the extent that he has gone in for someone who has one child…. n still claiming he loves me… we could be there for like a week and our chats will be good morning how are you and goodnight I’m going to bed. I like the guy but I’m finding it difficult to leave him.
Please I want an advice on this please no insult ok