Me and my boyfriend have been together for three years on & off again. We love each other, we get a long great. Though 2 years ago he broke up with me. For a year we still communicated & hooked up until we ended up getting back together again. The only thing is during our year off he dated a girl that I have never been able to get off my mind. She haunts me, it’s like I’m still measuring myself against her even though he’s back with me. I’m wondering if it’s becoming so debilitating that I should break up with him.