Hahahah I got the exact same feelings from the LSI. After we broke up, he said that he got attached to me way too hard. Later he would be calling me almost everyday to share odd things about his daily life . But we live too far away from each other and our relationship couldn't have ended differently. It was very romantic tho...
Besides feeling addicted there is this confusing side about duality. You never know WHY your dual says or does certain things. With conflictors you get irritated because of this, but with duals you get interested.