The fourth installment to Roni Loren's serial is the one that readers have been anticipating. This is where Cela learns of Foster's preference and his involvement with The Ranch, a BDSM club. With the help of her brother, who is also a member, Cela makes a decision to show Foster that she is willing to learn his proclivities in order to be with him.

At this point, I thought there would be an introduction to BDSM as it is a great opportunity for Foster to show Cela who he really is. However, Foster resists quite hard when Cela pushes him. Therefore, I don't think this installment shows a lot of progress in terms of their relationship conflict.

Furthermore, decisions weigh on Cela as the looming deadline approaches. The question is, will she stay or will she go? As Foster keeps himself distanced emotionally, Cela's determined personality will have to make an appearance before Foster realizes just what he may be giving up.

As you read NOT UNTIL YOU TRUST, you will feel the frustration that both Foster and Cela are feeling. There is also a touch of angst on Foster's side. I think Loren did a good job of translating those emotions on the page. Both of them will have to be willing to fight for each other in order to receive their happily-ever-after.