My boyfriend recently has lots of problems, he pays a lot less attention to me, and when I'm upset with it there comes an argument. I don't know what to do about it to avoid these arguments, and also to make things better as it was. The thing is I can't tell if it's me, or his work?? And I don't know if he loves me enough, or not!

Avoid starting arguments, find pleasant activities to do on your own, and be pleasant when you are with him. Give him time to work out his problems. Stop being needy!

Seems like there is a number of issues in this relationship. You need to stop getting upset and not let arguments happen, this will ruin your relationship.

Back off the needy stuff and give him space and then you will know if its YOU, or his job. From what you wrote it seems you get upset when you don't get enough attention, so do nice things that you enjoy for yourself until you get your answer.