Heartbroken, please comment your thoughts

My boyfriend was super into wanting to have a baby with me and he wouldn’t stop talking about it..

Then we fought for the first time..

He told me that he’s okay with not having a baby right now. (I never said I didnt want to) he just said he doesn’t want to right now. S o now we’ve been having protected sex.

I don’t understand why he’d change his mind so easily....