How 'bout you take the first step?
I agree with Goat ... Why don't YOU take the first step?
Offer him money. Always works for me.
You can't make anyone take the first step, however, you can take the first step and add Hippy's suggestion :)
lead by example, leave your bra in his closet
Pfft. If I waited for my husband to take the first step, I'd still be single. So take the first step yourself.