That if Kimberly cheated on Sasha with him she could well do the same to him?

She's shown she's capable of it and has set the precedent but would he have even thought it through that much?

Well as he also had a GF going in he can't hardly moan when she does

That's why he'll "never leave her (alone)" and make her sign a pre-nup (but only to protect the business and family from her, of course).

Isn't true love wonderful!

I think he likes this. He boasts about mainly going with married women doesn't he.

As if she'd ever cheat on him. He is the mighty Steven who scoffs at the thought of £100k. He is the mighty Steven who can unearth golden boogers on a daily basis, HE. IS. THE. MIGHTY. STEVEN. WHO. OWNS. HER.

FUMING

He also scoffs his own body weight in bogies on a daily basis!

I think he is that smitten, he doesn't think. He hasn't actually noticed the lack of chemistry from her, he hasn't noticed how her body language is towards him, he hasn't noticed a single thing.

Although, she might

Well technically she didn't cheat but even if she had, I'm suer Steven who had a girlfriend on the outside, and who brags about bedding married women will just have to suck it up.

I think even if hypothetically if she does stitch him up, he's hardly the most sympathetic of characters given how he acts towards her.