I hope the bumble bee was the person beside Erin's mom when they're camping. Maybe her mom took care of him in the past or something. That being said, rather than a love rival, I think he's more suited as her brother.
Also, is the black cat actually Erin's mom?
This migh become spoiler.... but I am just guessing....
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That cat is the bumble-bee guy. Same eyes colour.
And in his human form, he said that he can recognise Erin’s scents from afar. All this kinda point out that.
And how the cat and him are both very attached to Erin and don’t like Roman. Juliana has said that the guy was part of witch’s side and is something like a cousins. Which mean, the guy could have some kind of powers.
1. Turn into cat
2. Heightened sense of smell and sight. (How he find Erin amidst the crowd)
Team sane all the way ᕕ( ᐛ )ᕗ