NLT, I would think by now that if he was actually having internet issues that he would have contacted his ISP. It's gone on too long and I think he's using the internet as an excuse to come over and keep watch over his old territory. I wouldn't change my plans to accommodate his work problems. He can always go to the library or some café and use the internet there. I think it's time to shake things up just a wee bit and tell him no once in a while. He's far too comfortable in assuming that you'll always be accommodating to whatever he wants. What will he do if the two of you go your separate ways forever? Still run over and use your internet? He's just plain crazy, but not crazy enough to think of excuses to check out things at the old homestead. LOL!
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.