Morning my fellow Liara lovers!
Birthday gifts that we could give Liara? Well, I like to imagine that my Shepard salvaged a few personal items of Liara's from the Normandy crash site. A trinket Liara had that was given to her by Benezia, a nice framed photo of Shepard and Liara together, and a beautiful sapphire necklace that was given to her by Shepard. Sadly, Liara had to leave all of this behind when they Normandy was attacked and destroyed.
My Shepard would then take Liara out for dinner, with some dancing thrown in too! The pair of them would then sit underneath a tree, with Liara resting her head on Shepard's shoulder. At that point, Shepard would then explain to Liara that she knows that she lost some very personal items that she holds dear to her, and hand Liara what she recovered from the wreckage of the Normandy. I'd like to imagine that Liara would then be very moved, almost to tears. Cue kissing, and a warm, loving embrace.
Ahhh..what I'd do for the ability to take Liara out for dinner and dancing in a romance pack DLC!