So tell me, what is it that you intend to do next, given the suggestions and chatter we've had?
My sense tells me you crave to only be with him since you've thus far been unwilling to let go of him and consider someone else. So that's a decision for you to make.
You also need to take his situation into consideration too. He's with someone else currently. What do you expect him to do? At some point, you need to come clean and explain both your feelings as well as what you're thinking i.e. that you still love him deeply. You can't hide this.
You both need to move forward, whether that's together or separately. It does need to come to a head.