How do I tell my boyfriend (ladies' input good, guys' input better) I'm waiting until marriage for ?

I recently had a baby and was forced to give him up for adoption for uncountable reasons. My baby's daddy and I separated because it was too hard to continue the relationship as a couple after the adoption, although we're still friends. I recently started dating a different guy whom I've known for years. I decided after the baby that I want to save myself for marriage, as I should have done in the first place. Better late then never, I say. I know it seems redundant considering I'm obviously not a virgin. It is still important to me, however, to reserve myself. My new boyfriend has recently brought up the topic of . How do I explain myself so he can understand? It'll be hard enough as is trying to explain my reservations, but it'll be especially hard to explain despite the fact that I've already had . I don't want him thinking that it's his fault. Input from the gents out there is extremely helpful, but you ladies chirp in too.