Visa advise needed for Sarajevo

Hi! I have recently begun a relationship with someone from Sarajevo and would like to spend as much time there with them as possible I am looking for advise on the possible Visas I might be eligible for: I am self-employed with an internet sales business so do not need to find a job there. I would greatly appreciate any advise you fellow ex-pats in Bosnia may have for me. Thanks so much in advance!