One potential love interest could be an old flame who re - enters her life. He could be there to support her during the pregnancy, and they could rekindle their relationship. Maybe he's changed for the better and is now more ready for a committed relationship with Addison and her unborn child.
Ezra might also be a possibility. He could be involved in a complex relationship with Spencer where he has to deal with her pregnancy and all the emotions that come with it.
Davina could be an ally too. She has a good heart and her own powers as a witch. She might be sympathetic to Hayley's situation and use her magic to create protective spells around Hayley and the baby. Also, she could act as a mediator between Hayley and the other factions in the city, given her relationships with different groups.
Perhaps a mortal with a special gift for metallurgy or some other craft related to Hephaestus' work. This mortal could be seen as an equal in terms of skill, at least in a way that catches Hephaestus' eye. They would bond over their shared love for the craft, and over time, this bond could turn into a deep, loving relationship. Hephaestus might be drawn to the mortal's unique perspective and the way they approach the craft despite not having the same divine powers as he does.
Well, in the 'Full House' context, it could be one of the regular characters from the show. Maybe someone who has always had a special bond with the DJ and steps up during her pregnancy to be more than just a friend.
It could be Marcel. He has a long - standing relationship with the Mikaelson family, and his connection with Rebekah could deepen during her pregnancy. He might be the one to support her through the difficult times.
Meredith could be an important side character. Given her history with Derek, there could be some tense moments as she witnesses Addison's pregnancy. It could add an element of drama to the story.
Hinata is a very obvious choice. She has always had deep feelings for Naruto. In a fanfiction, their relationship could spiral further, exploring more of their shared interests, like their love for the village and their dreams for the future of the ninja world.
Perhaps a fellow skilled fighter like Siegfried could be a potential love interest. They could bond over their shared passion for combat and their understanding of the power of Soulcalibur. Another could be a mysterious new character who is initially her adversary but later discovers they have more in common than they thought.
If it's a crossover with the Percy Jackson universe, Percy himself could be interested in Ruby. They both have a sense of adventure and a desire to protect their friends. Annabeth might find herself drawn to Weiss because of their shared intelligence and strategic thinking. Leo Valdez could have a crush on Yang due to her mechanical skills and fiery personality. And Nico di Angelo might be intrigued by Blake because of her mysterious nature. These could all be great potential love interests in a RWBY - Percy Jackson crossover harem fanfiction.
There could be an older, more mature character, like a college student who she meets by chance and who is drawn to her unique charm and innocence.