April's admitted (in mainstream DR presentation) to playing Ollie. It's not impossible that she's moved from that to falling for him -- it just feels really unlikely.

As for the sex -- I'd guess April sees that as the best way to get Ollie hooked (read 'addicted' if you want to) and keep him that way. She's the one who has to grant permission, and as for the unprotected aspect -- I can't reproduce the exact soundtrack and orders from her to Ollie. The core would be that he's being instructed to withdraw and is complying. April may be used to using her body as a tool to get what she wants. There's at least a small chance she's done it before and knows exactly how to run the routine. When you're not sure how long you have to start operating power games, making people wait may not be in your best interests.

Having his baby -- missed that part. Saying she could never be in a real relationship with him because he snores -- caught that.

I think April was so shocked last night because she wasn't expecting the showmance to be brought up to that degree -- and she wasn't sure how far the questions were going to go. Remember, she's already freaked once when confronted on her actions making the air (although it slipped her mind in a hurry). The mainstream viewers don't know they've had sex: if Julie was about to bring it up, I can pretty much guarantee it would have reached her father...

It's possible Ollie's playing his own character, and there's definitely a chance that he's manipulating April while she's trying to do the same to him. But the most I can see there is a two-way street with neither driver truly aware of the other. April is playing him. At most, Ollie's playing her right back.