I really hope Tom and Grace stay together. It says in the one where Grace and Bobby go camping that Bobby gets supicous when Tom shows up. So if Bobby does find out he must not tell Jack which I think would be the first thing he'd do, so I think he might tell Jack what he does know and that Jack is kinda supicous anyways so it really doesn't surprise jack when he walks in on them.
And another thing I don't wanna bring this up but I feel I should, I had this thought, and evil thought
but I thought what if Tom is just using Grace to get his PhD or masters or whatever. But I don't think thats the cause anymore cause he didn't want her to be his thesis advisor at first. But yeah just thought I'd bring it up but I sure don't hope thats the plot behind all of this, cause if it is I'm gonna be pissed.