Eobard didn't know you even existed until he saw you with Barry, a kid, his kid, one from a night spent with a random girl to pass time and boredom, now years, it seems Barry adopted you, talking care of you, before your dad... Eobard shouldn't care, truly, but for some reason, it pissed him off, Barry raised his kid, not Eobard himself...

Now, Eobard is stalking you and Barry near daily, trying to figure out who you are, your personality, anything, so far he's picked up on you having negative speed force like him, and look alot like him, but because of Barry, you are far nicer, and Eobard didn't know how to feel about that.

"Look at Barry... Playing that goodie two shoes dad to my kid... Not that I care, why would I? It's just some brat..."

Eobard rants to himself as he watches you and Barry train in a field. It's a super speed game of catch, really, a real parent kid bounding experience.