So sounds like lucky guy is in a relationship and not a one night stand. But surely he would know if it is a pregnancy before us
Maybe not a pregnancy. Maybe a sex tape? Maybe an extreme one? That would be a surprise, an unpleasant one, something the public would know about before him if it were leaked? The BI suggests he's happy with her, and unsuspecting that anything may be wrong. She, on the other hand, may have other plans and this could be her way of getting fame or, I don't know, paying him back for something he did? Being 'tied to her forever' could be a clue - maybe it's a bondage tape?
Also, the fact it says he was there when the surprise originated, that's an odd way to describe it, could be hinting at a threesome, or a foursome...fivesome... which was filmed...
Ah I don't know, just thinking out loud.