I would say now would be a good time to let that lil cat outta the bag..

I honestly think most people can figure out something is a bit different about us Bipolar peeps. Talking about your Bipolar could easily make your relationship closer.

I didn't know I was Bipolar until I was 43. When I was diagnosed Bipolar my current husband , said ,,Oh well that explains some things LOL . Its not always been LOL ...but my Bipolar didn't scare him away... He loves me and that includes the Bipolar bits.

As for spilling on your past IP stays? I personally wouldn't worry about giving him details until I saw how he was dealing with " Bipolar"

I often think if I was tossed back into the bipolar dating pool I would probably wait a few months and if "Bipolar" scared someone away I would be grateful that I didn't waste anymore time on someone that just wasn't able to or want to understand.

Good luck and just do what feels right to you