Hi Susan
I tend to agree with Lora.
Not knowing what has happened between you makes it difficult to be sure.
However, even if you stayed with him, it wouldn't be because you really wanted to, I don't feel, so it wouldn't even be doing him any favours.
If you both wanted it to work out, then you should look at what it is that is going wrong and why it is happening.
It might be hard on him now, but if you don't care for him, then you would probably both be happier going your separate ways.
Boys and girl ~ men & women ~ do find it very hard to understand each other and this can cause heartache. I'm sorry that you are both being hurt by this and hope that you both sort things out, one way or another, and have a happier future.
Good luck and welcome.
