The phone calls... you were seeing H more then. Did the calls come when he was there? Shortly after he left, or before he showed up? Or when you might have been going out?
My h used to call and hang up, even on my cell phone. Like I wouldn't know who it was?
Ow used to call where I worked on Friday afternoons if my H was out of town. She also used to drive by on a neighboring street to spy on us.
It could have been either of them calling.
When you can't make a decision because you are torn between your heart and your head, listen to the half with the brain.