Ridin' off the rails

We've been talking a lot about process here. One of the things that's nice about having written a few books is that one starts to get a handle on what works and what doesn't. What I wish right now is that it also kept me from making the same mistake more than once.

I am a few pages into a new work in progress (yes, the one I've been whining about) and realized that I am making the exact same mistake I made with the original draft of my last romantic suspense. I have a motive for my heroine. I have a motive for my hero. They both need to find the killer for their own reasons and they're both investigating. The problem is, they're doing it off on their own.

Oh, sure, eventually they'll be crossing paths and getting all entangled, but right now, not so much. This is the exact same thing I did last time. When my editor read that first draft, she asked if maybe we could get the hero and heroine on the same page more than once or twice in the first hundred pages? It seemed like a pretty reasonable request considering that this is a ROMANCE NOVEL!!!! There was a lot of painful bouncing around of scenes and changing things about to get there.

So here I am doing it again. He shows up to tell her that they found her brother's body and then off he goes to investigate to bring the bad guy to justice. Off she goes to investigate to heal the wounds of the past. But how am I supposed to create sexual tension between them when they're not together? I'm only 40 pages or so in, so I can step back a little earlier this time, but I'd so like to learn from my mistakes a little faster.