There cute together, and look at Lucas he has matured over the past few months! He's willing to talk to Misbah, and he was hesitant about the party and drinking as well.
Its was sweet Dillon was there the whole time when Lucas was fighting his sexuality and especially when Lucas was drinking heavily and now Lucas want to return a favor and be there for Dillon just like Dillon was there for him
I have watched this whole series. Lucas is so much more mature and assumes himself now, while Dillon, who was so often badly treated by Lucas, never stops loving him.