I think some people get addicted to the thrill of "New Relationship Energy". That giddy, over-the-moon, crush-y feeling. I think to call that a "love addiction" is a bit of a stretch, but it's just like anything else that releases feel-good feelings--some people just can't get enough of it (dopamine!). In my humble opinion, people like that can have a healthy life by seeking a lifestyle that compliments their needs; ie, consensual non-monogamous relationships. Polyamory is a legitimate alternative lifestyle for people who do not do well with monogamous love. Being honest and communicative and dating people who are open and understanding of that lifestyle isn't inherently bad, but hiding that reality about yourself till after the damage has been done and leaving a trail of broken hearts in your wake *is* bad. I hope you are able to find some clarity on what really happened. In any case, you shouldn't blame yourself. Even if you were the problem, you weren't the problem. Your incompatibility doesn't require blame. Best of luck navigating these murky waters! <3