As far as the towel thing...
Clark has arleady admited to being attracted to Lois. So that isn't a problem.
As for anything else, being attracted to someone isn't being in love with them. So personally, I'm glad it didn't affect him anymore than it did. Doing so would
(a)Pretending lust/attraction is love
(b)be a subconsious effort to "force" himself towards Lois just because she's his wife.

The Kerth awards were sweet. Lois is seriously in danger of being depressed.

As far as Lana goes, I think Clark tenically knows Lana is unlikely to wait for him.

There was this, a few chapters ago
Quote
If Lois and I divorced and then Lana and I couldn't work things out, I'd be alone. Not completely alone, of course. I'd have my parents and Christopher. But what about when Lois met someone else? When Christopher had a step-dad? What about then?

Should I just commit myself to this marriage for the rest of my life? Was this what I wanted with the rest of my life?

Not really, I admitted to myself. Part of me – a big part – still held out hope that Lana and I could work things out some day. Another part of me knew that possibility was getting smaller every day I didn't go to her and tell her the whole truth and ask her to wait for me.
Clark knows it's unlikely that Lana will wait for him, unless he tells her to. Unfortuately for him, he also knows it's not possible to do so.

He realizes there is a fair chance he'll spend his life alone, if Lois and him divorce.

But - He still loves Lana. He misses her. He wants her for his wife, even though he knows it's unrealistic to expect it anymore. There isn't much he can do about that. It's a dream he's holding on to while his life has been turned upside down.

I still wonder how we'll find out what Lana thinks of aliens. (Carol mentioned we would later on.) If she DOES have problems with that, he'll know that's the end anyway.