Do you guys hiperfixate with a new person?

Yes, but very specific people and only after I trust them. I tone down later, but I don’t experience this “loose interest quickly” or “get bored” with these people. I tend to appreciate a 2-way loyalty.

honestly i do this with friends so often

Yesss, one of the best thing to remain grounded I think is to keep meeting friends, so you manage the "weight" you're gonna give