Ares and Hades should definitely touch base at some point. If for no other reason than Ares is hugely curious about how life with Persephone and child is going.
Titania is going to continue to do... whatever it is she's doing with Heph, naturally. She is actually, honestly, terribly fond of him and has no intention of hurting him. She's not labeling it and might get a bit skitzy if he tries to hammer out some rules/limits.