Are breaks normal ?

Is it normal to have breaks in the relationship? My boyfriend or x whatever you would call it , wants to focus on himself right now (I know he's been very stressed out with work ) but says there's still a very good chance of us getting back together. We have a couple therapist we see every once in awhile and he told me if I ask her she would insure me this is normal? He's really bad at talking and expressing his feelings he has adult ADHD and it really does affect thoughts and feelings . Can anyone tell me if this is something they have gone through or not ?