How the heck do we get back from this?
So, start out slow and work your way up to more!
Start to touch each other during the day, hold hands, rub his shoulder, back, or hair. Tell him you love him. Sit close together on the couch, give each other hugs and cuddles, start to kiss each other. Flirt with him, subtly seduce him with a lingering look, a low-cut blouse.
Spend time together doing things you both enjoy - go for walks, go to the museum, whatever. Hold hands and have a conversation. Listen to music in your living room and play footsies.
Undress in front of him, tantalize him with bits and pieces of your skin.
Hey, at one time you guys went through this when you were dating, right? You wanted to, but didn't know how to or might have been scared to proceed. Start pushing the envelope slowly a little bit at a time and you may be very surprised what kind of a response you get - and how that response may make you both feel 'alive' again.