Cell phone numbers are hard to track, the companies that say they can will call the person and get them to tell there name and all you will get is a first name, and then it will all backfire with mistrust in your face. Stop snooping now! I mean it!
Now this is how you do that.
See you saw a number, a lot, and you have an A thought. This A thought automatically leads to a B behavior, further snooping, investigating on the net, etc. Well these B behaviors, such as a phone call will lead to C consequences. The consequence will be that once H finds out, which he will, I was busted, you are so far back you have no idea.
When you haave an A thought skip B and C and immediately think the letter D. D is reality, it is the ground. Maybe that number is his fantasy football buddy, the UPS store, his boss, maybe the OW. The point is you don't know, and you don't want to know.
What you need to know is the answer to this question, which it appears you have stated before above. Over the next 48 hours I want you to think this through. Is an A crossing the line for you? If it is, then don't snoop you will find out soon enough and then you can leave the M. If it isn't then you need to back off or he will run with her and you will not see him again. Think about it for a while, if he was sincere and loved you, had remorse and sought your forgiveness, could you.
