I don't want to get trapped in the friend zone.

[TigerLover]

Now I wasn't there so i can't read the subtext but it doesn't sound like you're in danger of entering the friend-zone.

I suggest you just try to relax and keep it cool. If he's not ready to date again then he's not ready and trying to push him will just end in tears.

If you feel able to you might want to wait until he starts talking about dating then just declare your interest once, then drop the subject. Let him pick you up if he wants to.