the only thing that you should be doing is getting ready for your workday tomorrow to teach the little ones! ANd maybe before you go to bed set up a thing or two that you would like to do for you tomorrow after work.
You need to butt out of H's life for the moment and engage your own. Another thing I would suggest for future is to try and post on here before you take an inapproptiate action like looking at H's phone bill. Give us a chance to set you straight before you get your mind and imagination all worked up over what might be nothing at all.
Pray and get some sleep. I think I will follow my own advice.