he needs to back off of her and have fun with himself, worry about her if she needs it or several times a week. Right now she's not with you, and you can hurt yourself pretty bad. If you back off now, I believe she will see the difference - in that you where responding to her in a caring way and being responsible, and now you are just less available. She will notice this.
She'll have to get over OM, think about a breakup, how long does that take to get over? Probably several months?
