Note: I haven't seen episode 6X10 yet, so my opinion is not based on what happened there...
And please forgive my spelling mistakes:)

At first, i was Ok with the the Luddy arc, I have no problem with Lucus... he doesn't bother me that much :P
And i thought ( and still think ) that jelous House is really fun to watch XD
BUT the only thing I'm worried abot is Cuddy..
I thought this realtionship would make her happy.. not to happy to want Lucus forever (Im a huge Huddy प्रशंसक XD) but happy enoguth:) cuse this is sort of what she wanted, a realtionship...
This thing is, she is sad ! :O
She is wearing a crappy mood to work, and her scenes with House look like she is in pain...
It started with the conversation with her ad Wilson (in episode 8), she was in this serious mood... and then, in episode 9, the first scene with House (at the clinic) is as "happy" as she got the whole episode! All throught the episode she was serious,teird-looking,sad and guilty - she had no smile!
And the secne in her office with House, god it reminded me her mood in "Joy" last season (At her house, sobbing while leaning on the wall).

So this whole Luddy/Huddy complication make me feel really bad for Cuddy, she just wants to be happy, feel good with herself without guilt of frustration..

To make a long story short, i think the Luddu arc is probbley making Cuddy smile in her house ( but we nearly see thes scenes), with Lucus, but at work she is really crapy... I just want to see Cuddy smile! :)

let me know what yu guys think :)