Willis looked at Liz and admired her serene beauty, Willis did not know what made Liz so special but he admired whatever it was all the same. Willis knew he should probably have shown that affection for her more, perhaps if he did they would not have parted ways so... Badly. 

After several moments of pondering and staring in Liz's general direction he was snapped out of his deep thought as beverage machine began to buzz and make all the expected sounds that machines of that type usually make. It was then Willis came to realise that Liz was looking at him, looking at her, looking at him and looking at her again "...Uh... Um... Liz! Er... Hello dear! I... Er... Didn't expect to Find you here" which was only part true