Relationships can get stale, and sometimes it happens to a point where there's no turning back. And if there is an attempt to rekindle what there was in the past, both parties have to be fully invested in the endeavor. I usually suggest a separation period. This distance allows each individual to assess the relationship. Now, this can be a good thing, but beware of the pitfall. Often, because the separation is lonely, the couple gets back together with only a brief honeymoon and nothing really solved. This relationship may have run its course, but you won't know until you are willing to admit what needs work and make an effort to fix it. Your boyfriend's comment about whether he doesn't know if he will be happier with or without you is pathetic. A good relationship grow in its love. It may not be the butterflies that you get when you first start out together, but it's a feeling of warmth and belonging that only happy couples can identify.