Does 'reconnecting' with Liara in the Shadow Broker DLC give you Paramour 2?

Nope. Just like original ME2. Google for details.

Awwww man, came here for the same question, I had hoped they'd change that for the Legendary Edition, would really have made sense to add an additional achievement flag for Liara here. Oh well, Tali it is then....

not gettng paramour 2 for liara romancers is the true loyalty test