When your boyfriend has requested space in a relationship and you suspect he may have had ulterior motives all along should you address this with him for your own peace of mind or just move on?

I would be honest with him about your feelings. . .but if he is hiding something, chances are he won't be honest with you. Generally, when someone asks for "space" (as long as you don't visit/phone/text and have to know his whereabouts 24/7) they are basically wanting to ease out the relationship with you without hurting your feelings. I'd see this as a break up and move on with your life.