I am very sure, apart from his hormones, that Harry does not even want to think about Lara as anything other than as temporary a bed partner as possible. I, OTOH, do not believe for a heartbeat that Harry would go for it on his own.
It does seem that the relationship with Elaine is rather over. Too much baggage between them.
Molly is a definite maybe. However, it is likely that the Luccio Morgan relationship is more likely to be the case between those two. We will see, of course.
I am very happy to see Susan out of the loop. I do not know just how long a pre-vamp state will live. They may still have a somewhat normal lifespan as a human. That too leaves her out, IMO. Besides, I am not that fond of her.
I will miss Luccio. I like her. However, it became clear in Turn Coat, that Harry was not all that much in love with her. Lara's little pheromone tricks would not have had their impact had he been. Harry welcomed having someone who could be his peer as a lover. However, it was not his true love as that between Thomas and Justine.
Harry is alone again. I do not think that Murphy is even in the running. They love each other as friends, but that is all. Murphy is way too clear headed to attempt to be a love of a man who will outlive her by several hundred years. That too is a gesture of love on her part.