We lingered at the park for most of the afternoon. We wandered around, holding hands and making small talk about our surroundings. Zack was a biology teacher, and I learned more about the flora than I’d ever anticipated. Not that I retained much. Or even really cared what he talked about. Just listening to his smooth voice was a treat, and I let it wash over me. My brain was occupied with other things. What Zack was offering sounded wonderful. And there was no doubt in my mind we’d have a great time in bed. But I was too old for a vacation fling, wasn’t I? Especially with someone whose life was intermingled with mine by virtue of his sister. I studied Zack out of the corner of my eye, his features lit up with joy as he lectured about the tree in front of us. I didn’t know what it was, or